沸かす

わかす

To boil (water), to heat up

N4verb·wakasu

How to remember it

Transitive partner of 沸く — you actively heat water to a boil.

Example sentences

  • やかんのお湯を沸かした。

    やかんのおゆをわかした。

    I boiled the water in the kettle.

  • お風呂を沸かしてくれる?

    おふろをわかしてくれる?

    Could you heat the bath for me?

Usage

Transitive — takes a direct object (お湯, 風呂); pair with intransitive 沸く.

Related words

沸くお湯温める冷やす

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