Word
Kana: とかす Romaji: tokasu Level: N2

溶かす

Meaning in English

to melt, to dissolve

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What it means

溶かす means to cause a solid substance to dissolve or melt into a liquid, typically by heating or mixing with a solvent; it is also used metaphorically to soften a stance or someone's heart.

Main meanings

  • Physical dissolution or melting of a solid in a liquid or by heat.
  • Metaphorical use to soften resistance, opinions, or emotions.
  • Common in cooking, chemistry, and material processing contexts.

How to use it

Used in formal and everyday Japanese to describe dissolving actions as well as metaphorical softenings; examples include 砂糖を水に溶かす, 心を溶かす, 金属を溶かす.

Variants and close terms

  • 溶かす (とかす) — to melt/dissolve; tokasu
  • 溶解する (ようかいする) — to dissolve in chemistry; youkaisuru
  • 融かす (とかす) — to melt by heat; tokasu
  • 溶ける (とける) — to melt, to dissolve (intransitive); tokeru

Composition

  • 溶: left water radical signals liquid state; the concept of dissolution is encoded by the character, reflecting a transition from solid to liquid.
  • かす: kana suffix turning the kanji into a transitive verb meaning to cause dissolution.

Word class

verb (godan, 五段動詞)

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