カッとなる
かっとなる
expression
to lose one's temper, to flare up, to get hot-headed
1.
to lose one's temper, to flare up suddenly
To suddenly become angry and lose control of one's emotions. The mimetic カッと represents the sudden flash of anger.
カッとなって怒鳴った。
I lost my temper and yelled.
カッとなりやすい性格だ。
I have a short temper.
カッとなって殴ってしまった。
I got so angry I ended up hitting them.
カッとならないで冷静に話そう。
Don't lose your temper—let's talk calmly.
カッとなる uses the mimetic カッと to express the sudden, intense nature of the anger—like a flash of heat.
カッと by itself can describe:
- Eyes opening wide suddenly (カッと目を見開く)
- A sudden flash of heat or anger
Related expressions:
- 頭に血が上る (blood rushes to one's head)
- 切れる (to snap, lose it - slang)
- むかつく (to be pissed off)
Often used when explaining why someone did something regrettable in a moment of anger.