to debase or make impure by adding inferior materials or elements; use cheaper, inferior, or less desirable goods in the production of (any professedly genuine article)

to adulterate food.

adulterated.

adulterous ( def. 1 ) .

adjective

clean , moral , virtuous

adjective

attenuated , blended , contaminated , corrupt , defiled , degraded , depreciated , deteriorated , devalued , diluted , dissolved , impaired , mixed , polluted , tainted , thinned , vitiated , watered down , weakened , alloyed , doctored , loaded , sophisticated