extracurricular
//ˌɛkstrəkəˈrɪkjʊlər//
Adjective
extracurricularCanonical form
1
Relating to activities or subjects pursued in addition to the normal course of study at a school or college.
She participates in many extracurricular activities, such as drama club and debate team.
2
(informal) Occurring outside the bounds of one's regular duties or commitments, especially referring to romantic or sexual activities outside a primary relationship.
She discovered her husband's extracurricular activities when she found suspicious messages on his phone.