Japanese i-adjective
usui — thin 薄い
Explore the principal positive, negative, past, non-past and conditional forms of this Japanese adjective.
How i-adjectives conjugate
The final い changes to create negative, past and connecting forms. The adjective itself carries this grammatical information, so a separate verb is not required in the plain forms.
Conjugation table
The English glosses are approximate; the natural translation depends on the surrounding sentence.
| Form | Style | Positive | Negative |
|---|---|---|---|
| Present (non-past) | Plain | is thin usui 薄い | is not thin usukunai 薄くない |
| Polite | usui desu 薄いです | usukunai desu 薄くないです | |
| Past | Plain | was thin usukatta 薄かった | was not thin usukunakatta 薄くなかった |
| Polite | usukatta desu 薄かったです | usukunakatta desu 薄くなかったです | |
| Presumptive | Plain | will probably be thin usui darō 薄いだろう | usukunai darō 薄くないだろう |
| Polite | usui deshō 薄いでしょう | usukunai deshō 薄くないでしょう | |
| Conditional | Standard | if it is thin usukereba 薄ければ | if it is not thin usukunakereba 薄くなければ |
| Connecting form | Standard | usukute 薄くて | usukunakute 薄くなくて |
These conjugations are generated automatically and are intended as a learning guide. Check the natural usage in context when accuracy is important.