What does "turn on" mean?

To suddenly become hostile towards To attack or betray someone unexpectedly.

How do you use "turn on" in a sentence?

The dog turned on its owner. He turned on his former allies. She turned on me for no reason.

Phrasal Verb BritishAmericanAustralian ★★★★☆ Common Neutral

Meaning: To suddenly become hostile towards

反目，攻击

Volverse contra, atacar

敵に回る、裏切る

돌변하여 적대하다, 배신하다

To attack or betray someone unexpectedly.

突然对某人变得敌对。出人意料的攻击或背叛。

Volverse hostil hacia alguien de repente. Un ataque o traición inesperada.

突然誰かに敵対的になること。予期せぬ攻撃や裏切り。

갑자기 누군가를 공격하거나 배신하다.

Base verb: turn

Particle: on

Separable: No — the verb and particle stay together

The dog turned on its owner.
狗突然攻击了主人
el perro se volvió contra su dueño
犬が飼い主に噛みついた
개가 주인에게 덤벼들었다.
He turned on his former allies.
他反目攻击了以前的盟友
se volvió contra sus antiguos aliados
彼はかつての味方を裏切った
그는 예전 동료들을 배신했다.
She turned on me for no reason.
她无缘无故地对我发难
se volvió contra mí sin motivo
彼女は理由もなく私に敵意を向けた
그녀는 아무 이유 없이 나에게 적대적으로 돌변했다.

Context: betrayal, hostility, sudden

Tone: shocking

From turning against someone.

Era: Modern

Generation: All ages

Social background: Universal