[adul.ter.ate] vt -at.ed ; -at.ing [L adulteratus, pp. of adulterare, fr. ad- + alter other--more at else] (1531): to corrupt, debase, or make impure by the addition of a foreign or inferior substance or element; esp: to prepare for sale by replacing more valuable with less valuable or inert ingredients -- adul.ter.a.tor n
[2]adul.ter.ate adj (1590) 1: tainted with adultery: adulterous
2: being adulterated: spurious