沸かす (わかす, wakasu) Japanese meaning: boil | Kotomora

沸わかす

わ

か

す

Common wordJLPTN4Freq.FrequencyTop 50,000

沸かす · godan verb (-su)

Form	Positive	Negative
Dictionary	沸わかす	沸わかさない
Polite	沸わかします	沸わかしません
Past polite	沸わかしました	沸わかしませんでした
Past	沸わかした	沸わかさなかった
Te-form	沸わかして	沸わかさないで
Desire	沸わかしたい	沸わかしたくない
Potential	沸わかせる	沸わかせない
Passive	沸わかされる	沸わかされない
Causative	沸わかさせる	沸わかさせない
Causative passive	沸わかさせられる	沸わかさせられない
Volitional	沸わかそう
Polite volitional	沸わかしましょう
Imperative	沸わかせ	沸わかすな
Conditional	沸わかせば	沸わかさなければ
Tara conditional	沸わかしたら	沸わかさなかったら

Pairs with沸く

Meanings

1

godan verb (-su), transitive verb

boil; heat (a liquid); prepare (a hot drink/bath)

Transitive verb for heating water or other liquids to boiling, or for preparing hot drinks and baths. Common collocations: お湯を沸かす, 風呂を沸かす, コーヒーを沸かす.

やかんでお湯ゆを沸

Kanji

沸seethe, boil, ferment

Transitive / intransitive

沸わくN4sense 1
沸く is the intransitive form describing water heating up on its own, while 沸かす is the transitive form describing someone heating it.

Related words

焚たくN2sense 1
焚く is used especially for heating a bath (風呂を焚く) by burning fuel, while 沸かす is the general word for heating any liquid to a boil.
煽あおるN1sense 2
煽る means to incite or fan up emotions (often with negative intent), while 沸かす in its figurative sense means to excite or rouse enthusiasm more neutrally.
温あたためるN3sense 1
温める just means to warm something up without necessarily reaching a boil, whereas 沸かす specifically means to bring a liquid to boiling point.
茹ゆでるN3
沸かす means to bring water itself to a boil, whereas 茹でる means to boil something (like food) in that water.
熱ねっするN3
沸かす specifically means to bring a liquid to a boil, whereas 熱する is a more general term for applying heat to any substance.

Opposites

冷ひやすN4sense 1
冷やす means to cool a liquid down, the opposite action of 沸かす, which means to heat it up.

Don't confuse with

煮にるN3sense 1
煮る means to simmer food in liquid, while 沸かす means to heat the liquid itself, so they describe different actions despite both involving heat and water.
湧わかす sense 2
湧かす (from 湧く) means to cause something like a feeling or spring water to well up, while 沸かす (from 沸く) means to bring a liquid to a boil, and the two are easily confused since both are pronounced わかす.

Word family

湯ゆ沸わかし
kettle; teakettle
沸わかし器き
water heater; boiler; urn
沸わかし湯ゆ
heated bathwater; hot water for bathing
コーヒー沸わかし
coffee pot; coffee maker; percolator

Written forms

沸わかすUsage77%
Standard kanji spelling for boiling water or heating liquids.
わかすUsage23%

Etymology

Derived from the intransitive verb 沸く (わく, 'to boil') with the transitive/causative suffix す, forming a godan verb meaning 'to make boil'.