Japanese i-adjective
marui — round 丸い
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 round marui 丸い | is not round marukunai 丸くない |
| Polite | marui desu 丸いです | marukunai desu 丸くないです | |
| Past | Plain | was round marukatta 丸かった | was not round marukunakatta 丸くなかった |
| Polite | marukatta desu 丸かったです | marukunakatta desu 丸くなかったです | |
| Presumptive | Plain | will probably be round marui darō 丸いだろう | marukunai darō 丸くないだろう |
| Polite | marui deshō 丸いでしょう | marukunai deshō 丸くないでしょう | |
| Conditional | Standard | if it is round marukereba 丸ければ | if it is not round marukunakereba 丸くなければ |
| Connecting form | Standard | marukute 丸くて | marukunakute 丸くなくて |
These conjugations are generated automatically and are intended as a learning guide. Check the natural usage in context when accuracy is important.