illegal

/ɪˈliːɡəl//ɪˈli.ɡəl/

noun

1
An illegal act or technique.
2
(plural, as illegals) Contraband, esp. illegal substances such as drugs.
3
An illegal immigrant.
4
A spy working abroad illegally and undercover, without visible ties to his or her country’s authorities.

1
Contrary to or forbidden by law, especially criminal law.
“Nearly 40 million people live in UK areas with illegal air pollution”
2
Forbidden by established rules.
“Moving a pawn backward is an illegal move in chess.”
3
(of an issue printed for collectors) Totally fictitious, and often issued on behalf of a non-existent territory or country.
4
(of a person, sometimes offensive) Being or doing something illegally.
“illegal immigrant; illegal logger; illegal pilot”
5
(sometimes offensive) Being an illegal immigrant; residing in a country illegally.

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