Il-lĭc'it, a.

(il-lĭs'it), a. [Lat. illicitus; prefix il, for in, and licitus, p. p. of licere, to be allowed or permitted; Fr. illicite, Sp. illicito, It. illicito and illecito.] Not permitted or allowed; prohibited; unlawful; as, an illicit trade; illicit intercourse or connection.

One illicit and mischievous transaction always leads on to another. Burke.