| English | Japanese |
| n vs arbitrary action | 専行 |
| arbitrary action | 独走 news1 nf13 |
| n vs arbitrary decision | 独り決め |
| n vs adj-na adj-no arbitrary decision | 擅断 |
| n vs adj-na adj-no arbitrary decision | 専断 |
| exp arbitrary order | 順不同 |
| arbitrary origin | 任意原点 |
| n arbitrary panel layout | 変形ゴマ |
| arbitrary shaped structure | 任意形状構造物 |
| n arbitrary use of power | 専権 |
| by one's arbitrary decision | 勝手ながら with noun+する or noun+をverb |
| n making arbitrary decisions which benefit oneself | 御手盛り |
| n making arbitrary decisions which benefit oneself | お手盛り news2 nf33 (おてもり) |
| n yoji rife with arbitrary decisions | 専断横行 (acting on one's own authority) |