Japanese i-adjective
furui — old 古い
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 old furui 古い | is not old furukunai 古くない |
| Polite | furui desu 古いです | furukunai desu 古くないです | |
| Past | Plain | was old furukatta 古かった | was not old furukunakatta 古くなかった |
| Polite | furukatta desu 古かったです | furukunakatta desu 古くなかったです | |
| Presumptive | Plain | will probably be old furui darō 古いだろう | furukunai darō 古くないだろう |
| Polite | furui deshō 古いでしょう | furukunai deshō 古くないでしょう | |
| Conditional | Standard | if it is old furukereba 古ければ | if it is not old furukunakereba 古くなければ |
| Connecting form | Standard | furukute 古くて | furukunakute 古くなくて |
These conjugations are generated automatically and are intended as a learning guide. Check the natural usage in context when accuracy is important.