Extracurricular

Full definition of extracurricular

Adjective

1. Outside of the normal curriculum of an educational establishmentThe students enjoy a number of extracurricular activities at weekends.
2. Similarly outside of the normal duties of a job or profession
3. (informal) extramarital

Noun

1. (education) An activity outside the normal academic curriculum.
2. (informal) An activity beyond official duties of a job or profession.
3. (informal) An extramarital affair.