illegal

Definitions

Contrary to or forbidden by official law.

Not sanctioned by official rules, especially in sports or games.

Examples

It is illegal to drive without a valid driver's license.

The company was fined for engaging in illegal business practices.

Parking in front of a fire hydrant is strictly illegal.

Synonyms

unlawful illicit prohibited forbidden banned criminal felonious

Antonyms

legal lawful legitimate permissible allowed authorized licit