沸く · godan verb (-ku)
| Form | Positive | Negative |
|---|---|---|
| Dictionary | 沸く | 沸かない |
| Polite | 沸きます | 沸きません |
| Past polite | 沸きました | 沸きませんでした |
| Past | 沸いた | 沸かなかった |
| Te-form | 沸いて | 沸かないで |
| Desire | 沸きたい | 沸きたくない |
| Potential | 沸ける | 沸けない |
| Passive | 沸かれる | 沸かれない |
| Causative | 沸かせる | 沸かせない |
| Causative passive | 沸かせられるalso 沸かされる | 沸かせられないalso 沸かされない |
| Volitional | 沸こう | |
| Polite volitional | 沸きましょう | |
| Imperative | 沸け | 沸くな |
| Conditional | 沸けば | 沸かなければ |
| Tara conditional | 沸いたら | 沸かなかったら |
godan verb (-ku), intransitive verb
boil; come to a boil; grow hot
Intransitive: the liquid or bath water itself becomes hot or boils. The transitive counterpart is 沸かす.
When the water boils, let's make coffee.
The bath will be ready soon.
godan verb (-ku), intransitive verb
get excited; erupt in cheers; be lively
Metaphorical use, often with a crowd, venue, town, or event becoming excited or animated, especially with applause, cheers, or festival energy.
When the winning goal was scored, the whole stadium erupted.
The town is buzzing with excitement over the summer festival.
godan verb (-ku), intransitive verb
Specialized use for fermentation becoming active, especially in brewing or food contexts; everyday Japanese often uses 発酵する instead.
At the brewery, the starter mash is fermenting vigorously.
godan verb (-ku), intransitive verb
melt; become molten
Technical or limited use for metal becoming molten under high heat; in ordinary speech, 溶ける is much more common for 'melt'.
In a blacksmithing context, 鉄が沸く refers to iron melting under high heat.
Once the water boils, put in the pasta.
The bath is ready, hurry up and get in.
The venue erupted when the goal was scored.
The audience section erupted with cheers.
boil up; seethe · get excited; be in an uproar