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unfaithful
adjective un·faith·ful \ˌən-ˈfāth-fəl\
: having a sexual relationship with someone who is not your wife, husband, or partner
: not accurate
Full Definition of UNFAITHFUL
: not faithful: a : not adhering to vows, allegiance, or duty : disloyal <an unfaithful friend> b : not faithful to marriage vows <suspected her husband of being unfaithful> c : inaccurate, untrustworthy <an unfaithful copy of a document>
— un·faith·ful·ly \-fə-lē\ adverb
— un·faith·ful·ness noun
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First Known Use of UNFAITHFUL
15th century
Related to UNFAITHFUL
- Synonyms
- disloyal, false, fickle, inconstant, perfidious, recreant, traitorous, treacherous, faithless, untrue
UNFAITHFULNESS Defined for Kids
unfaithful
adjective un·faith·ful \ˌən-ˈfāth-fəl\
Definition of UNFAITHFUL for Kids
: not faithful : disloyal
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