an act of betrayal;
"he gave us the old double cross"
"I could no longer tolerate his impudent double-crossing"
betray by double-dealing
- Our suspicious old landlady was always afraid someone would cross her up.
- She was full of ambition, which led her to adopt a double character without exactly intending to deceive any one.
- Enroute a double cross has one of the thieves parachute with the loot into an abandoned graveyard surrounded by strange scarecrows.
- double-crossing 双杂交