adjective

illegal

illegal, unlawful

It is illegal to park here.

It is illegal to park here.

He was arrested for illegal activities.

He was arrested for illegal activities.

((it is)) illegal ((to-inf)) it is against the law to do sth. It is illegal to park here.

illegal ((noun)) an unlawful thing or action He was arrested for illegal activities.

Synonyms: unlawful, illicit; Antonyms: legal, lawful

From the prefix 'il-' (not) + 'legal'. Literally means 'not legal'.

Break it down: 'il-' means 'not'. So, 'illegal' is 'not legal'.

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