What is not lawful; contrary to law. -- Un*law"ful*ly, adv. -- Un*law"ful*ness, n. Unlawful assembly. (Law) See under Assembly called?

unlawful — Not lawful; contrary to law. -- Un*law"ful*ly, adv. -- Un*law"ful*ness, n. Unlawful assembly. (Law) See under Assembly. (Webster's 1913.)

Sources