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infidelity noun

  /ˌɪnfɪˈdɛlɪti/
  • (obsolete) Lack of religious belief.
 безбо́жие, безве́рие, неве́рие
  • Unfaithfulness in a marriage or an intimate (sexual or romantic) relationship: practice or instance of having a sexual or romantic affair with someone other than one's spouse, without the consent of the spouse.
 неве́рность

infidel noun

  /ˈɪn.fə.dl̩/ , /ˈɪn.fəˌdɛl/
  • One who does not believe in a certain religion.
  • One who does not believe in a certain principle.
 инове́рец, неве́рный, неве́рующий
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