思い立つ · godan verb (-tsu)
| Form | Positive | Negative |
|---|---|---|
| Dictionary | 思い立つ | 思い立たない |
| Polite | 思い立ちます | 思い立ちません |
| Past polite | 思い立ちました | 思い立ちませんでした |
| Past | 思い立った | 思い立たなかった |
| Te-form | 思い立って | 思い立たないで |
| Desire | 思い立ちたい | 思い立ちたくない |
| Potential | 思い立てる | 思い立てない |
| Passive | 思い立たれる | 思い立たれない |
| Causative | 思い立たせる | 思い立たせない |
| Causative passive | 思い立たせられるalso 思い立たされる | 思い立たせられないalso 思い立たされない |
| Volitional | 思い立とう | |
| Polite volitional | 思い立ちましょう | |
| Imperative | 思い立て | 思い立つな |
| Conditional | 思い立てば | 思い立たなければ |
| Tara conditional | 思い立ったら | 思い立たなかったら |
godan verb (-tsu), transitive verb
make up one's mind; resolve to do; hit upon the idea
Expresses the moment of deciding or getting the idea to do something, often suddenly or on impulse. Commonly used in the set phrase 思い立ったが吉日 (strike while the iron is hot).
He suddenly made up his mind to go on a trip.
There's no time like the present; I'll start studying today.
He suddenly decided to go on a solo trip.
On a sudden impulse, I started cleaning my room.
It's important to act as soon as the idea comes to you.