'adulterate' definitions:

Definition of 'adulterate'

(from WordNet)
adjective
Mixed with impurities [syn: adulterate, adulterated, debased]
verb
Corrupt, debase, or make impure by adding a foreign or inferior substance; often by replacing valuable ingredients with inferior ones; "adulterate liquor" [syn: load, adulterate, stretch, dilute, debase]