ムキになる

むきになる
expression
to get worked up, take something too seriously
informalemotionaction
1. to get worked up, take something too seriously
To become overly serious or agitated about something, often in reaction to teasing or criticism.
そんなにムキにならないで。
Don't get so worked up.
冗談(じょうだん)なのにムキになるなよ。
It's a joke—don't take it so seriously.
からかったらムキになって怒(おこ)り出(だ)した。
When I teased them, they got all worked up and angry.
ゲームで負(ま)けそうになるとムキになる人(ひと)っているよね。
There are people who get really intense when they're about to lose a game, right?

ムキになる describes becoming overly serious or agitated, especially when the situation doesn't warrant such a strong reaction. It often implies losing one's cool over something trivial.

The expression is commonly used:

  • When someone can't take a joke
  • When someone gets too competitive
  • When someone overreacts to teasing or criticism

The ムキ comes from 剥(む)き (peeled, exposed), suggesting raw, unguarded emotion.

general
Added 2026.2.1 17:18 · Revised 2026.9.2 13:01
09000/09365_mukininaru