Japanese i-adjective
nagai — long 長い
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 long nagai 長い | is not long nagakunai 長くない |
| Polite | nagai desu 長いです | nagakunai desu 長くないです | |
| Past | Plain | was long nagakatta 長かった | was not long nagakunakatta 長くなかった |
| Polite | nagakatta desu 長かったです | nagakunakatta desu 長くなかったです | |
| Presumptive | Plain | will probably be long nagai darō 長いだろう | nagakunai darō 長くないだろう |
| Polite | nagai deshō 長いでしょう | nagakunai deshō 長くないでしょう | |
| Conditional | Standard | if it is long nagakereba 長ければ | if it is not long nagakunakereba 長くなければ |
| Connecting form | Standard | nagakute 長くて | nagakunakute 長くなくて |
These conjugations are generated automatically and are intended as a learning guide. Check the natural usage in context when accuracy is important.