faithless
[adjective]
Synonyms: disloyal, false, fickle, inconstant, traitorous, treacherous, unfaithful, unreliable

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Antonyms: faithful
Contrasted words: constant, loyal, resolute, staunch, steadfast, true
Related Words: capricious, fickle, inconstant, unstable, fluctuating, wavering, changeable, changeful

[TahlilGaran] English Synonym Dictionary ▲

faith‧less /ˈfeɪθləs/ adjective formal
[Word Family: noun: faith, faithfulness ≠ unfaithfulness, faithful, faithlessness; adjective: faithful ≠ unfaithful, faithless; adverb: faithfully ≠ unfaithfully]
someone who is faithless cannot be trusted Synonym : untrustworthy:
a faithless friend
—faithlessness noun [uncountable]

[TahlilGaran] Dictionary of Contemporary English ▲