unfaithfuladjective
uk/ʌnˈfeɪθ.fəl/us/ʌnˈfeɪθ.fəl/having a sexual relationship or experience with a person who is not your husband, wife, or usual sexual partner:
If a man was unfaithful to me I'd leave him no matter what the circumstances.
Thesaurus: synonyms and related words
Disloyalty, betrayal & treason
- adultery
- backstabber
- betray
- betrayal
- break ranks idiom
- collaborate
- deserter
- desertion
- double-cross
- faithless
- false
- fifth column
- high treason
- sell sb down the river idiom
- sellout
- stab
- stab sb in the back idiom
- traitor
- treacherous
- treachery
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Relationships: infidelity
unfaithfulness
noun [ U ] uk/ʌnˈfeɪθ.fəl.nəs/us/ʌnˈfeɪθ.fəl.nəs/