Japanese i-adjective
sugoi — terrific 凄い
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 terrific sugoi 凄い | is not terrific sugokunai 凄くない |
| Polite | sugoi desu 凄いです | sugokunai desu 凄くないです | |
| Past | Plain | was terrific sugokatta 凄かった | was not terrific sugokunakatta 凄くなかった |
| Polite | sugokatta desu 凄かったです | sugokunakatta desu 凄くなかったです | |
| Presumptive | Plain | will probably be terrific sugoi darō 凄いだろう | sugokunai darō 凄くないだろう |
| Polite | sugoi deshō 凄いでしょう | sugokunai deshō 凄くないでしょう | |
| Conditional | Standard | if it is terrific sugokereba 凄ければ | if it is not terrific sugokunakereba 凄くなければ |
| Connecting form | Standard | sugokute 凄くて | sugokunakute 凄くなくて |
These conjugations are generated automatically and are intended as a learning guide. Check the natural usage in context when accuracy is important.