| Subject | English | Japanese |
| gen. | n vs adj-na adj-no arbitrary decision | 擅断 |
| gen. | n vs arbitrary decision | 独り決め |
| gen. | n vs adj-na adj-no arbitrary decision | 専断 |
| gen. | by one's arbitrary decision | 勝手ながら with noun+する or noun+をverb |
| gen. | n making arbitrary decisions which benefit oneself | 御手盛り |
| gen. | n making arbitrary decisions which benefit oneself | お手盛り news2 nf33 (おてもり) |
| gen. | n yoji rife with arbitrary decisions | 専断横行 (acting on one's own authority) |