(1):
(v. t.) To corrupt, debase, or make impure by an admixture of a foreign or a baser substance; as, to adulterate food, drink, drugs, coin, etc.
(2):
(a.) Debased by the admixture of a foreign substance; adulterated; spurious.
(3):
(a.) Tainted with adultery.
(4):
(v. i.) To commit adultery.
(5):
(v. t.) To defile by adultery.