Il*lic"it (?), a. [L. illicitus; pref. il- not + licitus, p.p. of licere to be allowed or permitted: cf. F. illicite. See In- not, and License.]
Not permitted or allowed; prohibited; unlawful; as, illicit trade; illicit intercourse; illicit pleasure.
One illicit . . . transaction always leads to another.
Burke.
-- Il*lic"it*ly, adv. -- Il*lic"it*ness, n.
© Webster 1913.