Synonyms of the word

extracurricular

• adj. Outside of the normal curriculum of an educational establishment.
• adj. Similarly outside of the normal duties of a job or profession.
• adj. (informal) extramarital.
• n. (education) An activity outside the normal academic curriculum.
• n. (informal) An activity beyond official duties of a job or profession.
• n. (informal) An extramarital affair.

adulterous

• adj. Of, or characterized by adultery.

extramarital

• adj. Taking place outside marriage.
• adj. Adulterous.

illicit

• adj. (law) Not approved by law, but not invalid.
• adj. Breaking social norms.
• adj. Unlawful.

outside

• n. The part of something that faces out; the outer surface.
• n. The external appearance of something.
• n. The space beyond some limit or boundary.
• n. The furthest limit, as to number, quantity, extent, etc.
• n. (dated, Britain, colloquial) A passenger riding on the outside of a coach or carriage.
• adj. Of or pertaining to the outer surface, limit or boundary.
• adj. Of, pertaining to or originating from beyond the outer surface, limit or boundary.
• adj. (baseball, of a pitch) Away (far) from the batter as it crosses home plate.
• adj. Reaching the extreme or farthest limit, as to extent, quantity, etc.
• adv. Outdoors.
• prep. On the outside of, not inside (something, such as a building).
• prep. Near, but not in.
• prep. (usually with “of”) Except, apart from.