Not faithful; not observant of promises, vows,
allegiance, or duty; violating trust or confidence; treacherous;
perfidious; as, an unfaithful subject; an unfaithful agent or servant.
- Not true to ones sexual partner.
- One of Rihannas song.
Betraying your partner, disrespecting their trust. Being disloyal and not being honest. Cheating.
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