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カッとなる (かっとなる) Japanese meaning | Kotomora

カッとなる

Meanings

1

expression, godan verb (-ru)

flare up; fly into a rage

colloquial

Colloquial expression for suddenly becoming very angry, often over something small. The カッと part is onomatopoeic for a flash of anger.

See also: カッと

彼かれはちょっとしたことでカッとなる。
He flares up at the slightest thing.

カッとなって言いい過すぎてしまった。

I got angry and said too much.

Similar words

怒おこる
怒る is a general verb for getting angry, while カッとなる emphasizes a sudden, explosive outburst.
キレる
キレる is slang for snapping or losing control, often more intense and lasting than the momentary flare-up of カッとなる.

Etymology

From the onomatopoeic adverb カッと (describing a sudden flash or heat) combined with なる (to become). The exact origin of カッと is uncertain, but it is sound-symbolic.