adj. Contrary to or forbidden by law, especially criminal law.
adj. Forbidden by established rules
adj. Totally fictitious, and often issued on behalf of a non-existent territory or country.
adj. Being an illegal immigrant; residing in a country illegally.
n. An illegal immigrant.
n. An illegal resident spy.
the GNU version of the Collaborative International Dictionary of English
adj. Not according to, or authorized by, law; specif., contrary to, or in violation of, human law; unlawful; illicit; hence, immoral
The Century Dictionary and Cyclopedia
Not legal; contrary to law; unlawful; illicit: as, an illegal act; illegal commerce.
Synonyms Illegal, Felonious, etc. (See criminal.) Unlawful, Illegitimate, etc. (See lawful.)
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. prohibited by law or by official or accepted rules
Word Usage
"Calling illegal immigrants 'undocumented workers' does not lessen the fact that they are * illegal*, that they have broken our laws and should be treated as such."