ilegitimo

adj. illegitimate, misbegotten; natural

v. illegalize, forbid by law, make illegal, prohibit

adj. illegal, unlawful; bastard, illegitimate; misbegotten; spurious

= illicit, illegitimate.
Ex: The commandment KOLN see COLOGNE should be sufficient cause for the rejection of the illicit proposal to establish OPERA -- KOLN.
Ex: Public libraries attract subscribers who use the library in both legitimate and illegitimate ways.