unfaithful

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

ruОписывает человека, который не является верным, особенно супругу или партнёру, или который не выполняет обещание или обязательство.esDescribe a una persona que no es leal o fiel, especialmente a su cónyuge o pareja, o que no cumple una promesa u obligación.frQui n'est pas fidèle, en particulier à son conjoint ou partenaire, ou qui ne tient pas une promesse ou un engagement.deBezeichnet eine Person, die nicht treu ist, besonders gegenüber dem Ehepartner oder Partner, oder die ein Versprechen oder eine Verpflichtung nicht einhält.ptDescreve uma pessoa que não é fiel, especialmente a um cônjuge ou parceiro, ou que não cumpre uma promessa, dever ou obrigação.zh指不忠诚、不忠实的人，尤指对配偶或伴侣不忠，或指不履行承诺、义务的人。arيصف شخصًا غير مخلص أو غير وفيّ، وخاصة للزوج أو الشريك، أو من لا يفي بوعده أو التزامه.

1. Not true to duty or obligation B2 formal

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

   • 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.

   ruНеверныйesInfiel a un deber u obligaciónfrInfidèle à ses engagementsdeTreulosptDeslealzh不忠arغير مخلص

   Sinônimos: disloyalfaithlessfalseperfidiousrecreanttraitoroustreacherousuntrue

   Antônimos: constantdevoteddutifulfaithfulloyalreliablesteadfasttruetrustworthy

2. Sexually disloyal B1 formal

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

   • 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.

   ruНеверныйesInfiel en lo sexualfrinfidèle sexuellementdeUntreuptInfielzh不忠arغير مخلص

   Sinônimos: adulterouscheatingdisloyalfaithlessstrayingtwo-timinguntrue

   Antônimos: chasteconstantdevotedfaithfulloyaltrue

3. Treacherous or traitorous C1 formal

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

   • 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.

   ruВероломныйesTraidor o deslealfrdéloyal, traîtredeVerräterischptDeslealzh不忠arخائن

   Sinônimos: disloyaldouble-dealingfaithlessfalseperfidiousrenegadetraitoroustreacheroustreasonousuntrue

   Antônimos: devotedfaithfulloyalsteadfasttrue

4. Not trustworthy B2 formal

   Lacking reliability or dependability.

   • 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.

   ruНенадёжныйesNo fiable / Falta de confianzafrInfidèle (qui n'est pas fiable)deUnzuverlässigptNão confiávelzh不可靠的arغير موثوق

   Sinônimos: undependableunreliableuntrustworthy

   Antônimos: dependablefaithfulloyalreliabletruetrustworthy

• more unfaithful comparative form
• most unfaithful superlative form