Word.ws English Dictionary

Synonyms of infidelity

4 similar words · 3 opposite words

Another word for infidelity is betrayal. Other synonyms of infidelity are Synonyms: adultery, irreligion and faithlessness. The opposite of infidelity is fidelity.

Synonyms and similar words for infidelity

nounUnfaithfulness in a marriage or an intimate (sexual or romantic) relationship: practice or instance...

  • Synonyms: adultery

nounUnfaithfulness in some other moral obligation.

nounLack of religious belief.

  • irreligionThe state of being irreligious; irreligious sentiment or thought.
  • faithlessnessThe quality of being faithless.

Opposite of infidelity

nounAntonym(s) of “moral”.

  • faithfulnessConstancy of support, alliance, and respect.
  • loyalty
  • fidelityOften followed by to or towards: faithfulness or loyalty towards a person, a group, one's civic or moral duties, etc....

Meaning of infidelity

  1. noun 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.
  2. noun Unfaithfulness in some other moral obligation.
  3. noun Lack of religious belief.

Full definition of infidelity

infidelity in other languages

Questions about synonyms of infidelity

What is another word for infidelity?
Infidelity has 4 synonyms on Word.ws, such as betrayal, Synonyms: adultery, irreligion and faithlessness.
What is the opposite of infidelity?
The opposite of infidelity is fidelity. Other antonyms of infidelity are faithfulness.
What does infidelity mean?
Infidelity means 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.

Source and license

Adapted from Wiktionary: infidelity (page history and authors) and the entries of the words listed. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws grouped the synonyms and antonyms by meaning and added links. Wiktionary data of 2026-09-02.

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