UNFAITHFUL Meaning of UNFAITHFUL in English transcription, транскрипция: [ ˈʌnˈfeɪθful ]adj. 1 not faithful, esp. adulterous. 2 not loyal. 3 treacherous. øøunfaithfully adv. unfaithfulness n. English main colloquial, spoken dictionary. Английский основной разговорный словарь. 2012