two-time
Cheat on someone
Two-time means to be unfaithful to a romantic partner by secretly seeing someone else: She found out he'd been two-timing her for months.
The word implies active deception rather than an open arrangement.
A two-timer is someone who does this.
Separately, two-time as an adjective means having done something twice: a two-time champion, a two-time offender.
double-cross
Treacherous deception of partner
- cheatAct dishonestly to win
- deceiveCause false belief
- unfaithfulBetraying a partner's trust
backstab · duplicity · treachery · perfidy · disloyalty · betray · swindle · con · fraud · deception
cheating
Deceptive rule-breaking
- adulteryMarried person's sexual betrayal
- affairRomantic entanglement outside commitment
- unfaithfulBetraying a partner's trust
mistress · lover · paramour · extramarital · fling · cuckold · philander · liaison · tryst · homewrecker
- deceptionlie, lies, lying, fake, fraud
- betrayalbackstab, betray, betrayal, traitor, backstabber
- dirty tacticsdirty trick, dirty tricks, dirty pool, foul play, cheap shot
- defectiondefection, defect, defector, turncoat, desertion
two-timebe faithful
Maintain devotion consistently
stay true · keep faith · be true · honor · commit
timer, timed, timing, timetable, untimely, overtime, two-timing, two-timer, timescale