How to say "double-cross" in Japanese

• 裏切るうらぎるJLPT N3approx.Common
  godan verb, transitive verbThe general verb for betrayal: to betray a person's trust, turn traitor, or go back on one's word; double-crossing is one of its senses. Use it whenever someone fails another who trusted them.
  やつは僕ぼくを裏切うらぎったんだ！↗

  He stabbed me in the back!
• 寝返るねがえるCommon
  godan verb, intransitive verbIts primary sense is changing sides, so its double-crossing is betrayal by switching allegiance: an ally who abandons one side for another. Choose it when the treachery lies in the switch itself.

Both verbs can render double-cross: use 「裏切る」 for betrayal of trust in general, and 「寝返る」 when the betrayal specifically consists of changing sides, abandoning one party for its opponent.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 裏切るうらぎるto betray
• 寝返るねがえるto change sides
• 裏切り行為うらぎりこういact of treachery
• 裏返るうらがえるto betray
• 寝返りを打つねがえりをうつto change sides