| Subject | English | Japanese |
| gen. | adv a second time | 二度 |
| gen. | adv a second time | 再び ichi1 news1 nf02 |
| gen. | n athlete competing in the middle-number match in a team competition, i.e. second in 3-on-3, third in 5-on-5 | 中堅 ichi1 news1 nf04 (kendo, judo, etc.) |
| gen. | n bad second | 亜流 news2 nf36 |
| gen. | n billionth of a second | ナノ・セカンド |
| gen. | n billionth of a second | ナノ・セック |
| gen. | n billionth of a second | ナノセック |
| gen. | n billionth of a second | ナノ秒 |
| gen. | n billionth of a second | ナノセカンド |
| gen. | bloom a second time | 返り咲く |
| gen. | n Buddhist service centred around the Lotus Sutra held over four days in Shiga Prefecture, starting from the 24th day of the second month of the lunisolar calendar | 比良八講 |
| gen. | n card printed with the second half of a poem | 取札 (in karuta) |
| gen. | n card printed with the second half of a poem | 取り札 (in karuta) |
| gen. | n vs carrying on a second line of work | 兼補 |
| gen. | n carrying on a second line of work | 兼ね役 |
| tech. | Castigliano's second theorem | カスティリアノの第二定理 (カスティリアノのだいにていり) |
| tech. | centimeter-gram-second system of units | シー•ジー•エス |
| gen. | n centimetre-gram-second system of units | ＣＧＳ単位系 |
| gen. | n chief second | チーフ・セコンド |
| gen. | n chief second | チーフセコンド |
| gen. | n child brought by a second spouse | 連れ子 |
| gen. | n child brought by a second spouse | 連子 (れんじ) |
| gen. | n vs citation at second remove | 孫引き |
| gen. | n obsc coaxing out of someone for a second time | 後強請り |
| gen. | n obsc coaxing out of someone for a second time | 跡強請り |
| gen. | n obsc coaxing out of someone for a second time | 後ねだり |
| gen. | n cold wind blowing at Lake Biwa around the 24th day of the second month of the lunisolar calendar | 比良八荒 |
| gen. | int command to have dog place its second paw in one's hand | お替り |
| gen. | int command to have dog place its second paw in one's hand | 御代わり |
| gen. | int command to have dog place its second paw in one's hand | 御代り |
| gen. | int command to have dog place its second paw in one's hand | お代り |
| gen. | int command to have dog place its second paw in one's hand | お替わり |
| gen. | int command to have dog place its second paw in one's hand | お代わり ichi1 |
| gen. | n cooking over a second fire to prevent contamination from one's everyday fire for performing Shinto rites | 別火 |
| gen. | n cooking over a second fire to prevent contamination from mourning people, menstruating women, etc. | 別火 |
| gen. | count per second | カウント毎秒 |
| gen. | cubic meter per second | 立方メートル毎秒 |
| tech. | cycle per second | サイクル毎秒 (saikuru-maibyō) |
| gen. | exp yoji Defeat is inevitable for one who goes second | 後手必敗 |
| gen. | degradation per second | 壊変毎秒 |
| gen. | degree per second | 度/秒 |
| gen. | disintegration per second | 崩壊原子数/秒 |
| gen. | n economic and monetary policies of Shinzo Abe, 90th and 96th prime minister of Japan, during his second term | アベノミックス |
| gen. | n economic and monetary policies of Shinzo Abe, 90th and 96th prime minister of Japan, during his second term | アベノミクス |
| gen. | n elder second cousin | 再従兄 |
| gen. | emperor's second consort | 中宮 |
| tech. | Engesser's second theorem | エンゲッサー第二定理 (エンゲッサーのだいにていり) |
| gen. | error of the second type | 第二種の過誤 |
| gen. | n-adv n-t every second | 毎秒 news2 nf27 |
| gen. | n adj-no every second month | 隔月 news1 nf23 |
| gen. | every second solar term | 中気 (occurring in the latter half of each month) |
| gen. | n-adv n-t every second year | 隔年 news2 nf26 |
| gen. | fight with every minute and every second | 分秒を争う |
| sport. | n vs finishing second | 準優勝 |
| gen. | first and second parties | 甲乙 news2 nf44 spec2 (in legal contexts) |
| gen. | exp first and second series | 正と続 |
| gen. | first and second volumes | 上下 ichi1 news1 nf05 (じょうげ) |
| gen. | n first day of the second month | 初朔日 |
| gen. | exp first "horse day" in any lunar month, but esp. the second lunar month | 初午 |
| gen. | first, second and third | 松竹梅 news2 nf47 (class) |
| gen. | n first-second-third | 上中下 (class) |
| gen. | n first, second, third and fourth | 甲乙丙丁 |
| gen. | n five-second rule | ５秒ルール |
| gen. | foot per second | フット/秒 |
| gen. | foot pound second system | フートポンド法 |
| gen. | foot squared per second | 平方フート/秒 |
| gen. | n for a second time | 二目 news2 nf45 |
| gen. | forced expiratory volume in 1 second | 一秒量 |
| gen. | forced expiratory volume one second percent | 一秒率 |
| gen. | n forced out on second | 二封 |
| sport. | n game or series of games between the first and second place teams | 首位攻防戦 |
| gen. | exp Habit is a second nature | 習い性と成る |
| gen. | prt indicates uncertainty or second hand nature of information quoted | とやら |
| gen. | n injury caused by a second party | 他損 |
| gen. | n Japanese as a second language | 日本語 news1 nf02 |
| gen. | n Japanese scorched earth policy during the second Sino-Japanese War | 三光作戦 三光 is a ref. to a Chinese phrase meaning 'kill all, burn all, loot all' |
| gen. | n Kuomintang government based in Chongqing during the Second Sino-Japanese War | 重慶政府 |
| gen. | n last day of the second lunar month | 二月尽 |
| gen. | n latter or second part | 後段 news2 nf43 |
| gen. | n leap second | 閏秒 |
| gen. | n lining out to second base | 二直 |
| gen. | litres per second | リットル/秒 |
| construct. | meter per second | メートル毎秒 (mētoru-maibyō) |
| construct. | meter per second squared | メートル毎秒毎秒 (mētoru-maibyō-maibyō) |
| gen. | metre per second | メートル/秒 |
| gen. | moving second | 後手 news1 nf15 (こうしゅ) |
| gen. | exp on second thought | 翻って考えると |
| gen. | n On second thoughts ... | 考え直して |
| gen. | n one second | 一秒 |
| gen. | per second | 毎秒 |
| gen. | n per second | 秒速 news1 nf23 (びょうそく) |
| gen. | n-adv n-t adj-no period after Second World War | 戦後 ichi1 news1 nf01 |
| obs. | n person one respects second only to one's father | 亜父 |
| gen. | person with the second move | 後手 news1 nf15 (こうしゅ) |
| gen. | play second fiddle | 後塵を拝する (to) |
| gen. | n vs playing second fiddle to | 随従 |
| tech. | polar second moment of area | 断面二次極モーメント (danmen-niji-kyoku-mōmento) |
| tech. | polar second moment of area | 憤性極モーメント (かんせいきょくモーメント) |
| tech. | polar second moment of area | 断面極二次モーメント (だんめんきょくにじモーメント) |
| gen. | prostitute of the second-highest class | 天職 news2 nf40 (Edo period) |
| gen. | n prostitute of the second rank | 格子女郎 (Edo period below the taiyu) |
| gen. | radian per second | ラジアン/秒 |
| gen. | n vs reading a second draft without checking it against the original | 素読 io (draught) |
| gen. | n vs reading a second draft without checking it against the original | 素読み (draught) |
| gen. | n relation in the second degree | 二親等 |
| gen. | revolution per second | 回転数/秒 |
| gen. | revolutions per second | 毎秒回転数 (maibyō-kaitensū) |
| gen. | n sage of the second order | 亜聖 |
| gen. | n second accession of the same emperor | 更位 |
| gen. | n vs second accession to the throne | 重祚 |
| comp. | n second account | サブアカウント |
| comp. | n uk second account | サブ垢 |
| gen. | n second adding of charcoal to the fire | 後の炭 (tea ceremony) |
| gen. | n second adding of charcoal to the fire | 後炭 (in tea ceremony) |
| gen. | second advent | 再来 news1 nf16 |
| gen. | n vs second advent | 再臨 |
| gen. | n Second Advent | 再降臨 |
| gen. | n second anniversary of a death | 三回忌 news2 nf35 |
| gen. | second antibody | 第二抗体 |
| gen. | second approximation theory for shells | 殻の二次近似理論 |
| gen. | n second arrow | 二の矢 |
| gen. | n second athlete to compete in a 5-on-5 team competition | 次鋒 (kendo, judo, etc.) |
| gen. | n second bag | セカンド・バッグ |
| gen. | n second bag | セカンドバッグ |
| gen. | n second base | セカンドベース |
| gen. | n second base | 連用形 |
| gen. | n second base | セカンド・ベース |
| gen. | second base | セカンド gai1 |
| comp. | n second battery | セカンド・バッテリ |
| comp. | n second battery | セカンドバッテリ |
| gen. | n second best | セカンド・ベスト |
| gen. | n second best | セカンドベスト |
| gen. | n adj-no second best | 次善 news2 nf29 |
| gen. | second blooming | 返咲き (in a season) |
| gen. | n second blooming | 返り花 (in a season) |
| gen. | n second blooming | 帰り花 (in a season) |
| gen. | second blooming | 返り咲き news1 nf20 (in a season) |
| gen. | n second blooming | 二度咲き |
| obs. | n second-born imperial prince | 二の宮 |
| gen. | second bottom | 第2床 |
| gen. | n vs second business | 兼業 news2 nf25 spec2 (けんぎょう) |
| gen. | n vs second calamity | 再変 |
| gen. | n vs second change | 再変 |
| gen. | n second child | 次子 |
| gen. | n second childhood | 本卦還り |
| gen. | n second childhood | 本卦帰り |
| gen. | n vs second childhood | 耄碌 |
| gen. | n second class | 二等 |
| gen. | n second class | ２等 |
| gen. | second-class | 二種 (e.g. mail) |
| gen. | n second-class | 乙種 (おつしゅ) |
| gen. | adj-na n second class | 二級 |
| gen. | second-class carriage | 普通車 |
| gen. | n second class carriage | ２等車 |
| gen. | n second class carriage | 二等車 |
| gen. | n second-class cruiser | 乙巡 |
| gen. | second class drug seller | 薬種商 |
| gen. | n vs second coat | 中塗 (nakanuri) |
| tech. | second coat | 中込 (ちゅうごみ) |
| tech. | second coat | 中塗 (nakanuri) |
| tech. | second coat | 束付 (つかづけ) |
| tech. | second coat | 中付 (ちゅうづけ) |
| gen. | n vs second coat | 中塗り (なか・ぬり) |
| construct. | second coat application | 二層塗り (にそう・ぬり) |
| construct. | second coat application | 二回塗り (にかい・ぬり) |
| construct. | second coating | 中塗り (なか・ぬり) |
| gen. | n vs second coming | 再臨 |
| gen. | second coming | 再来 news1 nf16 (e.g. of Christ) |
| gen. | n uk yoji second cousin | 又従弟 |
| gen. | n uk yoji second cousin | 又従兄 |
| gen. | n uk yoji second cousin | 又従姉妹 |
| gen. | n uk yoji second cousin | 又従兄妹 |
| gen. | n uk yoji second cousin | 二従兄妹 |
| gen. | n uk yoji second cousin | 再従姉妹 |
| gen. | n uk yoji second cousin | 再従兄弟 |
| gen. | n uk yoji second cousin | 二従姉弟 |
| gen. | n uk yoji second cousin | 二従姉妹 |
| gen. | n uk yoji second cousin | 二従兄弟 |
| gen. | n uk yoji second cousin | 又従姉弟 又従兄 & 又従弟 are abbr. |
| gen. | n uk yoji second cousin | 再従姉弟 ik |
| gen. | n uk arch second cousin | 弥従兄弟 |
| gen. | n second cousin | 三従兄弟 |
| gen. | n uk arch second cousin | 弥従姉妹 |
| gen. | n uk yoji second cousin | 再従兄妹 ik はいとこ is Tohoku dialect |
| gen. | n uk yoji second cousin | 又従兄弟 |
| gen. | n second crop | 二番作 |
| gen. | second crop | 第二作物 |
| gen. | n second crop | 裏作 |
| gen. | n second crop | 二番刈り |
| gen. | n second crop | 後作 |
| gen. | second crop land | 二毛作地 |
| gen. | second cropping | 裏作 |
| gen. | n second daughter | 二女 |
| gen. | n second daughter | 次女 ichi1 |
| gen. | n second day of the month | ２日 |
| gen. | n second day of the month | 二日 ichi1 |
| gen. | n second defeat | 再敗 |
| math. | second degree | 商 news1 nf09 (of the Japanese & Chinese pentatonic scale, shō) |
| gen. | n second degree burn | 第二度熱傷 |
| gen. | n second-degree relative | ２等親 |
| gen. | n second-degree relative | 二等親 |
| gen. | n second division | 第二部 |
| obs. | n second division of the night | 乙夜 (approx. 9 pm to 11 pm) |
| gen. | n second door from here | 又隣 |
| gen. | n second draft | 再案 |
| gen. | n second draught | 再案 |
| gen. | second dyeing | 上がけ |
| gen. | second dyeing | 上掛 |
| gen. | second dyeing | 上掛け (uwagake) |
| gen. | n vs second edition | 重版 news2 nf42 |
| gen. | n vs second edition | 再版 news2 nf44 (さいはん) |
| gen. | n second elder brother | 次兄 |
| gen. | n French Second Empire | 第２帝政 |
| gen. | n Second Epistle of John | ヨハネの手紙二 (book of the Bible) |
| gen. | n Second Epistle of Peter | ペトロの手紙二 (book of the Bible) |
| gen. | n Second Epistle to the Corinthians | コリントの信徒への手紙二 (book of the Bible) |
| gen. | n Second Epistle to the Thessalonians | テサロニケの信徒への手紙二 (book of the Bible) |
| gen. | n Second Epistle to Timothy | テモテへの手紙二 (book of the Bible) |
| gen. | n second finger | 中指 ichi1 news2 nf33 |
| construct. | second floor | 二層 (にそう) |
| construct. | second floor | 二階 (にかい) |
| gen. | n second floor | 二階 ichi1 news1 nf05 (にかい) |
| gen. | n second floor front room | 表二階 |
| tech. | second floor girder | 二階梁 (にかいばり) |
| gen. | n second foreign language | 第２外国語 |
| gen. | n second foreign language | 第二外国語 |
| gen. | n adj-no second generation | 二代目 |
| gen. | second generation | 第二世代 |
| gen. | n n-suf n-pref second generation | 二世 news1 nf08 |
| gen. | n second-generation baby boomer | 団塊ジュニア (born 1971-1974) |
| gen. | n second-generation Diet member | 二世議員 |
| gen. | n second-generation Japanese | 二世 news1 nf08 (or Korean, etc.) |
| gen. | n second-generation politician | 二世議員 |
| gen. | adj-na n second grade | 二級 |
| gen. | n adj-no second grade | 中等 news1 nf20 (ちゅうとう) |
| gen. | n second-grade alcohol | 二級酒 |
| gen. | n second grade of the third rank of honor | 従三位 (honour) |
| math. | second Green formula | グリーンの第二定理 |
| math. | second Green identity | グリーンの第二定理 |
| math. | second Green theorem | グリーンの第二定理 |
| gen. | second-grouth forest | 二次植生林 |
| gen. | n second-growth forest | 二次林 |
| tech. | second-growth timber | 粗目材 (あらめざい) |
| gen. | n second guest of honor | 次客 |
| gen. | n second guest of honour | 次客 (at a tea ceremony) |
| gen. | n second half | 後半 ichi1 news1 nf02 |
| gen. | n second half | 後半戦 news1 nf14 |
| gen. | n adj-no second half | 後期 ichi1 news1 nf06 (kōki) |
| gen. | n-adv n second half of the fiscal year | 下期 news1 nf11 (しもき) |
| gen. | n second half of the year | 後半期 (こうはんき) |
| gen. | n second half of the year | 下半期 news1 nf19 (しもはんき) |
| gen. | n second hand | 秒針 (of clock) |
| construct. | second hand | 中古 (ちゅうこ) |
| gen. | n-t adj-no second-hand | 中古 ichi1 news1 nf11 (ちゅうこ) |
| gen. | adj-no n second-hand | 使用済み news1 nf10 |
| gen. | n second hand bookstore | 古本屋 (bookshop) |
| gen. | n vs second hand citation | 孫引き |
| gen. | n second hand clothes shop | 古着屋 |
| gen. | second-hand equipment | 中古プラント |
| gen. | n second-hand knowledge | 耳学問 |
| gen. | second-hand opinion or knowledge | 受売り |
| gen. | second-hand opinion or knowledge | 請売り |
| gen. | second-hand opinion or knowledge | 請け売り |
| gen. | second-hand opinion or knowledge | 受け売り (うけいり) |
| gen. | n second-hand shop | リサイクル・ショップ |
| gen. | n second-hand shop | 道具屋 |
| gen. | n second-hand shop | リサイクルショップ gai1 |
| gen. | n second-hand smoking | 受動喫煙 |
| gen. | second-hand telling | 請売り |
| gen. | second-hand telling | 請け売り |
| gen. | second-hand telling | 受売り |
| gen. | second-hand telling | 受け売り (うけいり) |
| gen. | n vs second helping | お代わり ichi1 |
| gen. | n vs second helping | お替り |
| gen. | n vs second helping | お替わり |
| gen. | n vs second helping | お代り |
| gen. | n vs second helping | 御代り |
| gen. | n vs second helping | 御代わり |
| gen. | second helping | 替り |
| gen. | second helping | 替わり news1 nf18 |
| gen. | second helping | 代り |
| gen. | second helping | 代わり ichi1 news1 nf03 (かわり) |
| gen. | second highest priestly rank in Buddhism | 和上 |
| gen. | second highest priestly rank in Buddhism | 和尚 news2 nf30 spec2 |
| gen. | n second home | セカンド・ハウス |
| gen. | n second home | セカンドハウス (sekando-hausu) |
| gen. | n yoji second honeymoon | 旧婚旅行 |
| gen. | n second house | セカンド・ハウス |
| tech. | second house | セカンド•ハウス |
| gen. | n second house | セカンドハウス (sekando-hausu) |
| gen. | n second husband | 継夫 |
| gen. | n second imprisonment | 再服役 |
| gen. | n second in command | 副将 news2 nf35 |
| gen. | second in command | ナンバーツー |
| gen. | second in command | ナンバー・ツー |
| gen. | n second in command | 次将 |
| gen. | adj-na n second in rank | 乙 (おつ) |
| gen. | second instar | 二齢 |
| gen. | n second language | 第二言語 |
| gen. | n second law of thermodynamics | 熱力学の第２法則 |
| gen. | n second law of thermodynamics | 熱力学の第二法則 |
| tech. | Second Leiter Building | 第二ライター•ビル (だいにライター•ビル) |
| gen. | n second level | 準大手 (company, etc.) |
| tech. | second-level problem | 二次の問題 (にじレベルのもんだい) |
| gen. | n second lieutenant | 少慰 (marine and army) |
| gen. | n second lieutenant | 少尉 news2 nf34 spec2 |
| gen. | n second lieutenant | 三尉 (JSDF) |
| gen. | n second life | セカンド・ライフ (esp. that of a retiree) |
| gen. | n second life | セカンドライフ (esp. that of a retiree) |
| gen. | n second lunar month | 梅見月 |
| gen. | n second lunar month | 雪消え月 |
| gen. | n second lunar month | 小草生月 |
| gen. | n second lunar month | 雪消月 io |
| obs. | second lunar month | 令月 |
| gen. | second lunar month | 夾鐘 |
| gen. | n vs second marriage | 再婚 news1 nf22 |
| gen. | second marriage | 転嫁 ichi1 news2 nf25 |
| gen. | n vs second marriage | 再縁 |
| gen. | n second mate | 二等航海士 |
| gen. | second messenger | 二次メッセンジャー |
| gen. | second messenger | 二次情報伝達物質 |
| construct. | second moment of area | 断面二次モーメント (danmen-niji-mōmento) |
| tech. | second moment of area | 慣性モーメント (kansei-mōmento) |
| obs. | n second month of the lunar calendar | 中春 |
| obs. | n second month of the lunar calendar | 如月 news2 nf45 |
| obs. | n second month of the lunar calendar | 仲春 |
| gen. | second month of the lunar calendar | ２月 spec1 |
| obs. | n second month of the lunar calendar | 衣更着 |
| obs. | n second month of the lunar calendar | 更衣 |
| gen. | second month of the lunar calendar | 二月 news1 nf01 |
| gen. | n second mortgage | 二番抵当 (にばんていとう) |
| gen. | n second mortgage | 二重抵当 |
| obs. | second most important provincial shrine | 二の宮 |
| gen. | second move | 後手 news1 nf15 (in go or shogi, こうしゅ) |
| gen. | n second note of the ancient chromatic scale | 大呂 (in China approx. D sharp) |
| gen. | second object | 第二目的語 |
| gen. | n second of nine traditional astrological signs | 二黒 (corresponding to Saturn and southwest) |
| gen. | n second of the sexagenary cycle | 乙丑 |
| gen. | n second offence | 再犯 news2 nf46 (さいはん) |
| gen. | n second offender | 再犯者 |
| gen. | n second offense | 再犯 news2 nf46 (さいはん) |
| gen. | n second officer | 二等航海士 |
| gen. | exp n second oil crisis | 第二次オイルショック (1979) |
| gen. | n second opinion | セカンド・オピニオン |
| gen. | n second opinion | セカンドオピニオン |
| pejor. | second or third person plural | 共 ichi1 (implies speaker is of higher status than those referred to) |
| gen. | second order bench mark | 二等水準点 (にとうすいじゅんてん) |
| gen. | second order bench mark | 二等水準測 |
| gen. | second order control point | 二次基準点 |
| gen. | second order interaction | 第二種階級の交互作用 |
| gen. | second order leveling | 二等水準測量 (にとうすいじゅんそくりょう) |
| tech. | second-order levelling | 二等水準測量 (にとうすいじゅんそくりょう) |
| tech. | second-order transition point | ガラス転移点 (がらす・てん'い・てん) |
| tech. | second-order transition point | 二次転移点 (にじてんいてん) |
| gen. | second order traverse point | 二等多角点 |
| gen. | second order traversing | 二等多角測量 |
| tech. | second-order triangulation | 二等三角測量 (にとうさんかくそくりょう) |
| gen. | second order triangulation | 二等三角測量 (にとうさんかくそくりょう) |
| tech. | second-order triangulation station | 二等三角点 (にとうさんかくてん) |
| gen. | n second part | 中篇 (of three) |
| gen. | n second part | 中編 (of three) |
| gen. | n second party of the same night | 二次会 news2 nf35 |
| gen. | n second person | 二人目 |
| gen. | n second person | 対称 ichi1 news2 nf33 (taishō) |
| gen. | n second place | 二位 |
| gen. | n second place | 次位 |
| gen. | n second plan | 再案 |
| gen. | n second play on the program | 二番目狂言 |
| gen. | n second play on the program | 二番目物 |
| gen. | second polar body | 第二極体 |
| gen. | n second postscript | 三伸 |
| gen. | n vs second power | 自乗 (jijō) |
| gen. | n vs second power | 二乗 (nijō) |
| gen. | n second prize | ２等賞 |
| gen. | n second prize | 二等賞 |
| gen. | n second proof | 再校 |
| gen. | n second punitive expedition | 再征 |
| gen. | n second rank | 次位 |
| gen. | n second-ranking fox spirit | 空狐 in mythology |
| gen. | n adj-no second-rate | 二流 ichi1 news2 nf33 |
| gen. | n second-rate | 二の町 |
| gen. | second reaction | 二次反応 (niji-hannō) |
| gen. | n French Second Republic | 第二共和政 |
| gen. | n second reserve | 後備 |
| gen. | second reservoir | 第二貯水池 |
| gen. | n second reversal | 再逆転 |
| gen. | n second revised edition | 再訂版 |
| gen. | second revised estimate | 第2回修正見積り |
| gen. | second rolling | 二次転圧 (にじてんあつ) |
| gen. | n second run | セカンド・ラン |
| gen. | n second run | セカンドラン |
| gen. | n Second Section company | ２部上場企業 (on the Tokyo Stock Exchange) |
| gen. | n second segment of chicken wing | 手羽先 |
| gen. | n adj-no second semester | 後期 ichi1 news1 nf06 (kōki) |
| gen. | second sentence | 中段 (chūdan) |
| gen. | n n-suf second series | 続き ichi1 news1 nf09 |
| gen. | second serving ball of noodles | 替玉 (to add to previously purchased ramen) |
| gen. | second serving ball of noodles | 替え玉 news1 nf12 (to add to previously purchased ramen, かえだま) |
| gen. | n second sign of Chinese zodiac | 丑 news2 nf29 (The Ox, 1am-3am, north-northeast, December) |
| gen. | adj-na n second sign of the Chinese calendar | 乙 (おつ) |
| gen. | n sens Second Sino-Japanese War | 日華事変 (1937-1945) |
| gen. | n sens Second Sino-Japanese War | 中日戦争 (may imply Chinese aggression 1937-1945) |
| gen. | n sens Second Sino-Japanese War | 支那事変 (1937-1945) |
| gen. | n obsc Second Sino-Japanese War | 日華戦争 (1937-1945) |
| gen. | n Second Sino-Japanese War | 日中戦争 (1937-1945) |
| gen. | n second son | 次男坊 |
| gen. | n second son | 二男 |
| gen. | n second son | 次男 ichi1 news2 nf34 |
| gen. | n second supplementary sound channel | 副音声 |
| comp. | n second source | セカンド・ソース |
| comp. | n second source | セカンドソース |
| gen. | n adj-no second stage | 第二期 |
| gen. | n adj-no second stage | 第２期 |
| tech. | second-stage BOD | 第二段階の BOD (biochemical oxygen demand, だいにだんかいのビー•オー•ディー) |
| gen. | second-stage BOD | ニ次BOD |
| gen. | second-stage combustion | 第二期燃焼 |
| gen. | second stage concrete | 第二次コンクリート |
| gen. | n second star of the evening | 二番星 |
| gen. | second-stress conical curve | 第二応力円垂曲線 |
| gen. | n second string | 二の糸 (of a shamisen, etc.) |
| sport. | n adj-no second string players | 二軍 news1 nf15 |
| gen. | n second string to one's bow | 二の矢 |
| gen. | n vs second surgery | 再手術 |
| construct. | second ten days | 中旬 (of a month, ちゅうぢゅん) |
| gen. | n adj-no second term | 第二期 |
| gen. | n adj-no second term | 第２期 |
| gen. | n-adv n-t second third of a month | 中旬 ichi1 news1 nf05 (ちゅうぢゅん) |
| gen. | second-tier, secondary | 準大手 |
| gen. | n-adv n-t second time | 再度 ichi1 news1 nf11 |
| gen. | n vs second time | 再訂 (さいてい) |
| anat. | n second toe | 第二趾 |
| gen. | n second train to depart | 次発 |
| gen. | second verb | 後項動詞 |
| gen. | n second verse | 脇句 (in a linked series of poems) |
| gen. | n second volume | 中篇 |
| gen. | second volume | 下 (of two) |
| gen. | n second volume | 中編 |
| obs. | n second watch | 二更 (approx. 9 pm to 11 pm) |
| gen. | n second week's memorial services | 二七日 news1 nf11 |
| gen. | n second wife | 二度添い |
| gen. | n second wife | 継室 |
| gen. | n one's second wife | 後添え |
| gen. | n second wife | 後妻 news2 nf41 spec2 |
| gen. | n one's second wife | 後添い |
| gen. | second wife | 後釜 |
| gen. | n second wind | セカンド・ウインド |
| gen. | n second wind | セカンドウインド |
| gen. | n Second World War | 第２次世界大戦 |
| gen. | n Second World War | 第二次世界大戦 news1 nf10 |
| gen. | n Second World War | 第二次大戦 (だいにじたいせん) |
| gen. | n second year at high school | 高２ |
| gen. | n second year at high school | 高二 |
| gen. | n second-year high-school student | 高２ |
| gen. | n second-year high-school student | 高二 |
| gen. | n second-year ice | 二年氷 |
| gen. | n second year pupil in lower secondary school | 中１ |
| gen. | n second year pupil in lower secondary school | 中一 |
| gen. | n second-year of junior high | 中２ |
| gen. | n second-year of junior high | 中二 |
| gen. | n second year college student | 二回生 |
| gen. | n second year college student | ２回生 |
| gen. | n second-year student | 二年生 |
| gen. | n several seconds | 数秒 |
| gen. | somebody who sells second hand clothes | 古着屋 |
| construct. | speed per second | 秒速 (びょうそく) |
| gen. | take a second name or alias | 号する |
| gen. | take second billing | 後塵を拝する (to) |
| gen. | telling at second hand | 受売り |
| gen. | telling at second hand | 請売り |
| gen. | telling at second hand | 請け売り |
| gen. | telling at second hand | 受け売り (うけいり) |
| gen. | n obsc ten important Rinzai temples, second in significance to the Kyoto Gozan | 十刹 oK |
| math. | tensor of the second order | テンソル (tensoru) |
| math. | tensor of the second order | 二階のテンソル |
| obs. | obsc 15th day of the second month of the lunar calendar | 中春 (around mid-spring) |
| obs. | obsc 15th day of the second month of the lunar calendar | 仲春 (around mid-spring) |
| gen. | n the first and second | 一二 news1 nf18 |
| gen. | n n-suf n-pref the Second | 二世 news1 nf08 (king, etc. of the same name) |
| gen. | n the second ... | 第二次 |
| gen. | the second law of thermodynamics | 熱力学の第二法則 |
| gen. | the second line in a four-line Chinese poem | 承句 |
| gen. | n the second part | 二部 news1 nf08 |
| construct. | the Second party | 乙 (おつ) |
| gen. | n the second time | 二度目 |
| gen. | n thirty-second of the sexagenary cycle | 乙未 |
| gen. | exp to be second to none | 人後に落ちない (in) |
| gen. | n traditional Chinese spelling system in which two characters are used: the first one for the onset, the second one for rhyme and tone | 反切 |
| gen. | n twenty-second day of the month | ２２日 |
| gen. | n twenty-second day of the month | 二十二日 |
| gen. | n twenty-second of the sexagenary cycle | 乙酉 |
| gen. | exp adj-i unable to endure being somewhere a second longer | 居た堪れない |
| gen. | exp adj-i unable to endure being somewhere a second longer | 居た堪らない |
| gen. | exp adj-i unable to endure being somewhere a second longer | 居たたまらない |
| gen. | exp adj-i unable to endure being somewhere a second longer | 居たたまれない |
| tech. | vibration per second | 振動毎秒 (しんとうまいびょう) |
| gen. | visit the same prostitute or geisha for a second time | 裏を返す |
| gen. | watt second | ワット秒 |
| gen. | n watt-second | ワット秒 |
| gen. | exp adv within seconds | 数秒以内 |
| gen. | n younger second cousin | 再従弟 |