extracurricular
1. [ adjective ] outside the regular duties of your job or profession
Related terms: outside
2. [ adjective ] outside the regular academic curriculum
Examples:

"sports and drama are popular extracurricular activities"

Related terms: outside
3. [ adjective ] (sexuality) characterized by adultery
Synonyms: extramarital adulterous
Examples:

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

Related terms: illicit
Similar spelling:   extraordinary
  extragalactic
  extraordinarily
  extramarital
  extracellular