Japanese i-adjective
oishii — delicious 美味しい
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 delicious oishii 美味しい | is not delicious oishikunai 美味しくない |
| Polite | oishii desu 美味しいです | oishikunai desu 美味しくないです | |
| Past | Plain | was delicious oishikatta 美味しかった | was not delicious oishikunakatta 美味しくなかった |
| Polite | oishikatta desu 美味しかったです | oishikunakatta desu 美味しくなかったです | |
| Presumptive | Plain | will probably be delicious oishii darō 美味しいだろう | oishikunai darō 美味しくないだろう |
| Polite | oishii deshō 美味しいでしょう | oishikunai deshō 美味しくないでしょう | |
| Conditional | Standard | if it is delicious oishikereba 美味しければ | if it is not delicious oishikunakereba 美味しくなければ |
| Connecting form | Standard | oishikute 美味しくて | oishikunakute 美味しくなくて |
These conjugations are generated automatically and are intended as a learning guide. Check the natural usage in context when accuracy is important.