n

pettiness; smallness; insignificance; a nonentity; a nobody

nothingness; vanity; nonentity (о человеке); nullity (о человеке); cipher; nobody (a very unimportant person); nought (о человеке); ought (о человеке); pigmy; pygmy; snipe; jack sprat; lay figure; crum; drongo; jackstraw; losel; whiffler; blighter; duffer; gink; picayune; pipsqueak; rip; shrimp; insignificant being; poor stick; negligible quantity; twerp (Anglophile); crum-bum (Anglophile); jack-straw; jack-straws; third-rater (Anglophile); no-goodnik (ABelonogov); loser (MargeWebley); crumb bum; half pint; lay-figure (о человеке); piss ant; zero (о человеке); nebbish (bigmaxus); Pond life (A worthless or contemptible person or group КГА); O; futility; inanity; inexistence; insignificancy; nihility; pitifulness; voidness; insignificant (Abysslooker); cipherdom (markvidov); lay; slag; trifle; schmuck; whipper-snapper; nincompoop (scherfas); lightweight (ничтожный человек Alex_Odeychuk); arthropod; stiff (misha-brest); scum (Konstantin Uzhinsky); nigger-lip (жаргон gennady shevchenko)

Игорь Миг

ne'er-do-well; dirt

amér.

whiffet; jerk; bump on a log (Bobrovska); toad (о человеке; That miserable toad is lucky to have even a single friend. Val_Ships); scrub (some pimpled dirty little scrub in sandals (Virginia Woolf) Taras); nothingburger (a person who is a nonentity Taras)

naught (Aly19)

half-pint; schlub; dipshit; dot; hoddy-doddy; patsy; pea soup; piss-ant; schloomp; schlump; squeegie; squegee; zerk (Interex); muff cabbage/ muff garbage (urbandictionary.com dessy); pissant (Valle); nit; waste of life (e.g. Dude, do something and stop being a waste of life! Tanitra); waste of skin (Ellie3011); creeper (Taras); chopped liver (alexs2011); prick; shithouse (Andy); nada (Artjaazz); schmendrick (Yiddish for a "pipsqueak" or "nonentity." Despite on-line sources, it does not refer to intelligence and does not mean "a stupid person." Artjaazz); douchebag (Samburskiy)

austr.

bottle-oh's rouseabout

austr., argot.

skunk

austr., inform., figur.