adulterate
1 antonym for adulterate — opposites grouped by meaning.
Adj — Made less pure because another substance has been mixed into it.
Antonyms
Etymology
From Latin adulterātus (“adulterate, adulterated, defiled, polluted, counterfeited”), perfect passive participle of adulterō (“to adulterate, defile, commit adultery (with), counterfeit”) (see -ate (adjective-forming suffix)), from ad- (“to, in the direction of”) + alter (“other”) + -ō (verb-forming suffix), literally...
Full origin of adulterate →