疑う · godan verb (-u)
| Form | Positive | Negative |
|---|---|---|
| Dictionary | 疑う | 疑わない |
| Polite | 疑います | 疑いません |
| Past polite | 疑いました | 疑いませんでした |
| Past | 疑った | 疑わなかった |
| Te-form | 疑って | 疑わないで |
| Desire | 疑いたい | 疑いたくない |
| Potential | 疑える | 疑えない |
| Passive | 疑われる | 疑われない |
| Causative | 疑わせる | 疑わせない |
| Causative passive | 疑わせられるalso 疑わされる | 疑わせられないalso 疑わされない |
| Volitional | 疑おう | |
| Polite volitional | 疑いましょう | |
| Imperative | 疑え | 疑うな |
| Conditional | 疑えば | 疑わなければ |
| Tara conditional | 疑ったら | 疑わなかったら |
godan verb (-u), transitive verb
Broadly used for questioning the truth, reliability, or honesty of something or someone. Covers mild doubt to strong suspicion.
There is no reason to doubt his words.
The police suspect that he might be the culprit.
The police suspect him.
Many people doubt the truth of his story.
I suspected that he might be lying.
There's no doubt about his ability.