向きになる

ムキになる · also むきになる

to become serious; to take something seriously (e.g. a joke, teasing); to become irritated or angry (esp. at something trivial); to get worked up

Also written 向きに成る

Meaning

expv5r
to become serious; to take something seriously (e.g. a joke, teasing); to become irritated or angry (esp. at something trivial); to get worked up

Example sentences

テニスやピンポンのバックハンドでは手は球を打つ際逆向きになる。

In tennis and ping-pong backhand the hand is turned backwards in making the stroke.
あなたが向きになることじゃないでしょ。

You don't need to get excited about it.