unfaithful

• Bezeichnet eine Person, die nicht treu ist, besonders gegenüber dem Ehepartner oder Partner, oder die ein Versprechen oder eine Verpflichtung nicht einhält.

Describes a person who is not loyal, especially to a spouse or partner, or who fails to keep a promise or commitment.

1. Not true to duty or obligationB2formal

   Failing to fulfill one's promises, duties, or obligations.

   Treulos

   • He was unfaithful to his promise to help.
   • The soldier was punished for being unfaithful to his duty.
   • She felt he had been unfaithful to their agreement.

   Synonymedisloyalfaithlessfalseperfidiousrecreanttraitoroustreacherousuntrue

   Antonymeconstantdevoteddutifulfaithfulloyalreliablesteadfasttruetrustworthy

2. Sexually disloyalB1formal

   Engaging in a romantic or sexual relationship with someone other than one's partner.

   Untreu

   • She discovered her husband had been unfaithful.
   • Being unfaithful often leads to the end of a relationship.
   • He admitted to being unfaithful to his girlfriend.

   Synonymeadulterouscheatingdisloyalfaithlessstrayingtwo-timinguntrue

   Antonymechasteconstantdevotedfaithfulloyaltrue

3. Treacherous or traitorousC1formal

   Having the character of a traitor; betraying trust or allegiance.

   Verräterisch

   • The unfaithful agent sold secrets to the enemy.
   • History remembers him as an unfaithful servant to the crown.
   • Her unfaithful actions endangered the entire mission.

   Synonymedisloyaldouble-dealingfaithlessfalseperfidiousrenegadetraitoroustreacheroustreasonousuntrue

   Antonymedevotedfaithfulloyalsteadfasttrue

4. Not trustworthyB2formal

   Lacking reliability or dependability.

   Unzuverlässig

   • An unfaithful friend cannot be relied upon in times of need.
   • The witness was considered unfaithful due to his inconsistent statements.
   • She found his memory unfaithful and full of errors.

   Synonymeundependableunreliableuntrustworthy

   Antonymedependablefaithfulloyalreliabletruetrustworthy