沸わく

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.

• お湯ゆが沸わいたら、コーヒーを入いれよう。

  When the water boils, let's make coffee.

• もうすぐお風ふ呂ろが沸わく。

  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.

• 決けっ勝しょう点てんが入はいると、スタジアム全ぜん体たいが沸わいた。

  When the winning goal was scored, the whole stadium erupted.

• 町まちは夏なつ祭まつりで沸わいている。

  The town is buzzing with excitement over the summer festival.

godan verb (-ku), intransitive verb

ferment

Specialized use for fermentation becoming active, especially in brewing or food contexts; everyday Japanese often uses 発酵する instead.

• 蔵くらでは、酒しゅ母ぼが勢いきおいよく沸わいている。

  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'.

• 鍛冶かじの文ぶん脈みゃくでは、「鉄てつが沸わく」は鉄てつが高こう温おんで溶とける状じょう態たいをいう。

  In a blacksmithing context, 鉄が沸く refers to iron melting under high heat.