adulterating
a-dul-ter-at-ing
verb (present participle)
Making something impure or inferior by adding foreign or lesser substances.
"They were adulterating the wine with water."
adjective
Causing impurity or debasement, often by adding inferior components.
"The adulterating agent reduced the quality."
Thesaurus
Synonyms: extraneous, foreign, adulterant
Antonyms: purifying