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adultery

C2
Fairly common

Pronunciation

UK

  • /ədˈʌltəri/

US

  • /əˈdəltəri/

Meanings

Noun

  1. sex between a married person and someone who is not their spouse

  2. spiritual unfaithfulness or idolatry in religious writing

Beyond the definition

Adultery isn't just about physical intimacy; it is a breach of trust within a committed relationship—specifically, marriage. Think of it as breaking a sacred promise, a betrayal that cuts deep. It isn't simply "cheating"; it is distinctly the act of a married person having sex with someone other than their spouse. Historically and in many cultures today, adultery carries strong moral and sometimes legal consequences. You might read about it in dramatic novels or see its fallout depicted in courtroom dramas, as it is often at the heart of stories exploring love, betrayal, and societal expectations. While cultural nuances exist, the core idea remains: a violation of marital fidelity.

Examples

  1. 1

    Marriage

    Their marriage ended after she discovered his adultery.

  2. 2

    Religious sin

    In some religions, adultery is treated as a serious sin.

  3. 3

    Political scandal

    The senator denied allegations of adultery during the campaign.

See also

Similar

Shades of meaning

Contrast

Used with (collocations)

  • commit adultery
  • accused of adultery
  • grounds for divorce

Word family

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Forms and spellings

2 forms open this card.

Main spelling

  • adulterynoun

Forms

  • adulteriespluralnoun