extramarital
1. [ adjective ] (sexuality) characterized by adultery
Synonyms: extracurricular adulterous
Examples:

"an adulterous relationship" "extramarital affairs" "the extracurricular activities of a philandering husband"

Related terms: illicit
Similar spelling:   extramural
  extradural
  extraordinarily
  extremity
  extravert
  extradite
  extraordinary
  extraverted
  extradition
  extracurricular
  extravertive
  extraversive
  extraversion