Synonyms of the word

illicit

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

adulterous

• adj. Of, or characterized by adultery.

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.

extramarital

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

illegal

• adj. Contrary to or forbidden by law, especially criminal law.
• adj. Forbidden by established rules.
• adj. (philately, of an issue printed for collectors) Totally fictitious, and often issued on behalf of a non-existent…
• adj. (of a person, sometimes offensive) Being or doing something illegally.
• adj. (chiefly US, sometimes offensive) Being an illegal immigrant; residing in a country illegally.
• n. (colloquial, offensive) An illegal immigrant.
• n. An illegal resident spy.

illegitimate

• adj. Illegal; against the law.
• adj. Born to unmarried parents.
• adj. Illogical; incorrectly deduced.
• adj. Not authorized by good usage; not genuine; spurious.
• adj. (botany) Involving the fertilization of pistils by stamens not of their own length, in heterogonously…
• n. someone born illegitimately.

outlaw

• n. A fugitive from the law.
• n. (historical) A criminal who is excluded from normal legal rights; one who can be killed at will without…
• n. A person who operates outside established norms.
• n. A wild horse.
• n. (humorous) An in-law: a relative by marriage.
• n. (slang) A prostitute who works alone, without a pimp.
• v. To declare illegal.
• v. To place a ban upon.
• v. To remove from legal jurisdiction or enforcement.
• v. To deprive of legal force.

outlawed

• adj. (of an act) put beyond the limits of the law, forbidden, against the law.
• adj. (of a person) put beyond the limits of the law, declared an outlaw or declared a criminal.
• v. simple past tense and past participle of outlaw.

unlawful

• adj. Prohibited; not permitted by law (either civil or criminal law; see illegal).