裏切る

裏切る is a transitive verb, meaning it directly takes an object. The object is typically marked with the particle を (o).

彼は友達を裏切った。 (Kare wa tomodachi o uragitta.) - He betrayed his friend.

It can be used to describe betraying a person, a trust, expectations, or even principles.

期待を裏切る (kitai o uragiru) - to betray expectations; to disappoint.

The ~te form of 裏切る is 裏切って (uragitte). This can be used to connect clauses or indicate a sequential action.

彼は約束を裏切って、行かなかった。 (Kare wa yakusoku o uragitte, ikanakatta.) - He broke his promise and didn't go.

The passive form is 裏切られる (uragirareru), meaning 'to be betrayed.'

私は彼に裏切られた。 (Watashi wa kare ni uragirareta.) - I was betrayed by him.

The potential form is 裏切れる (uragireru), meaning 'can betray,' although it's less commonly used than 'to be able to betray someone's trust' (信頼を裏切ることができる).

たとえ困難でも、私は自分の信念を裏切ることはできない。 (Tatoe konnan demo, watashi wa jibun no shin'nen o uragiru koto wa dekinai.) - Even if it's difficult, I cannot betray my beliefs.