adjective. Prohibited by law.

adjective. Prohibited by official rules.

adjective. Unacceptable to or not performable by a computer.

noun. A person who is not legally authorized to live and work in a country.

Not legal; contrary to law; unlawful; illicit: as, an illegal act; illegal commerce.

Synonyms Illegal, Felonious, etc. (See criminal.) Unlawful, Illegitimate, etc. (See lawful.)

adjective. Not according to, or authorized by, law; specif., contrary to, or in violation of, human law; unlawful; illicit; hence, immoral

adjective. Contrary to or forbidden by law, especially criminal law.

adjective. Forbidden by established rules

adjective. Totally fictitious, and often issued on behalf of a non-existent territory or country.

adjective. Being an illegal immigrant; residing in a country illegally.

noun. An illegal immigrant.

noun. An illegal resident spy.

adjective. prohibited by law or by official or accepted rules

corrupt and illegal practices prevention act  

amerciable  banned  black  black-market  bootleg  

illegal alien  illegal immigrant  

Eagle  Segal  beagle  eagle  extralegal  

dangerous  foreign  immoral  improper  legitimate  

aberrant  abnormal  abominable  actionable  against the law