Source : Webster's Revised Unabridged Dictionary (1913)

Licit \Lic"it\ (l[i^]s"[i^]t), a. [L. licitus permitted, lawful,
   from licere: cf. F. licite. See {License}.]
   Lawful. ``Licit establishments.'' --Carlyle. -- {Lic"it*ly},
   adv. -- {Lic"it*ness}, n.

Source : WordNet®

licitness
     n : the quality of strictly conforming to law [ant: {illicitness}]