adulterous

/ə'dʌltərəs/
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Definition
  1. Adjective:
    • Involving or characterized by adultery; not faithful to a spouse or partner: Describes a person who engages in sexual relations outside their marriage or committed relationship, or describes the relationship or act itself.
    • Involving illicit sexual relations: More broadly, it can describe any sexual activity considered improper or illicit according to social or moral norms, often implying secrecy and betrayal.
Usage and Examples
  • Describing a person:
    • The novel's plot revolves around an adulterous husband whose secret life is eventually exposed.
    • She was labeled adulterous by the community after the affair became public.
  • Describing a relationship or act:
    • They carried on an adulterous affair for years.
    • The king's adulterous behavior was a scandal at the court.
Advanced Usage and Nuances
  • Legal and Social Context: The term often carries strong moral, legal, or religious condemnation. In some jurisdictions, adulterous conduct can be grounds for divorce.
  • Literary and Formal Tone: The word is more common in formal, legal, or literary contexts than in casual conversation, where terms like "cheating" or "having an affair" are more frequent.
    • The politician's adulterous liaisons were detailed in the press. (Formal/Journalistic)
  • "Adulterous" vs. "Extramarital": While both refer to relations outside marriage, adulterous strongly implies betrayal and violation of vows. "Extramarital" is a more neutral, descriptive term.
Variants and Related Words
  • Adulterer (noun): A person who commits adultery.
    • The sermon condemned the adulterer.
  • Adulteress (noun): A female who commits adultery. (Note: This gendered form is now often considered dated or sexist; "adulterer" is increasingly used for any gender.)
  • Adultery (noun): The act or state of being adulterous; voluntary sexual intercourse between a married person and someone who is not their spouse.
    • He filed for divorce on the grounds of adultery.
Synonyms
  • Unfaithful: Not loyal to a spouse or partner. (A more general synonym)
  • Cheating: Informal term for being sexually unfaithful.
  • Two-timing: Informal, implies deceitfully having a simultaneous relationship with two people.
  • Philandering: (Often used for men) habitually engaging in casual sexual relationships, especially outside marriage.
Antonyms
  • Faithful: Loyal and steadfast in affection or allegiance to a spouse or partner.
  • Loyal: Giving or showing firm and constant support or allegiance.
  • Chaste: Abstaining from extramarital, or from all, sexual intercourse.
Idioms and Common Phrases
  • While there is no common idiom using the exact word "adulterous," the concept is central to many phrases:
    • To commit adultery: The standard phrase for the act.
      • The law considered it a crime to commit adultery.
    • An affair of the heart: A euphemistic or literary way to describe a romantic, often adulterous, relationship.
      • Their affair of the heart ended tragically.
Adjective
  1. not faithful to a spouse or lover
    • adulterous husbands and wives
    • a two-timing boyfriend
  2. characterized by adultery
    • an adulterous relationship
    • extramarital affairs
    • the extracurricular activities of a philandering husband