criminal conversation

/K R IH1 M AH0 N AH0 L K AA0 N V ER0 S EY1 SH AH0 N/
noun
  1. 1

    Unlawful sexual intercourse with a married person; adultery; a common law tort arising from adultery, abolished in many jurisdictions.

Synonyms

Source: https://en.wiktionary.org/wiki/criminal%20conversation