adultery
1. [ noun ] (sexuality) extramarital sex that willfully and maliciously interferes with marriage relations
Synonyms: fornication criminal_conversation
Examples:

"adultery is often cited as grounds for divorce"

Related terms: extramarital_sex
Similar spelling:   adulterer
  adult
  adulterator
  adulatory
  adulterous
  adulterine
  adulteress
  adulterate
  adulterant
  adulate
  adulterated
  adulator
  addled
  adult_male
  adult_body