Japanese i-adjective
fukai — deep 深い
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 deep fukai 深い | is not deep fukakunai 深くない |
| Polite | fukai desu 深いです | fukakunai desu 深くないです | |
| Past | Plain | was deep fukakatta 深かった | was not deep fukakunakatta 深くなかった |
| Polite | fukakatta desu 深かったです | fukakunakatta desu 深くなかったです | |
| Presumptive | Plain | will probably be deep fukai darō 深いだろう | fukakunai darō 深くないだろう |
| Polite | fukai deshō 深いでしょう | fukakunai deshō 深くないでしょう | |
| Conditional | Standard | if it is deep fukakereba 深ければ | if it is not deep fukakunakereba 深くなければ |
| Connecting form | Standard | fukakute 深くて | fukakunakute 深くなくて |
These conjugations are generated automatically and are intended as a learning guide. Check the natural usage in context when accuracy is important.