adulterate

1 containing foreign or lower-grade substances the pharmacist was convicted of selling adulterate drugs in order to maximize profits Synonyms impure, adulterated, alloyed, contaminated, dilute, diluted, polluted, tainted, thinned, weakenedRelated Words unclarified, unfiltered, unrefined; befouled, begrimed, bemired, besmirched, corrupted, debased, defiled, dirtied, fouled, maculate (or maculated), soiled, spoiled, sullied; blended, commingled, incorporated, intermingled, intermixed, merged, mingled, mixed; coalesced, combined, compounded; cheapened, doctoredNear Antonyms clarified, filtered, purified, refined, ultrarefined; neat, plain, straight; concentrated, strong; uncombined; pasteurized; sterile, sterilized; clean, immaculate, spotless, stainless, unsoiled, unsulliedAntonyms fine, pure, ultrapure, unadulterated, unalloyed, uncontaminated, uncut, undiluted, unmixed, unpolluted, untainted

2 relating to or being a sexual encounter or relationship between a married person and someone other than their spouse caught red-handed in what he claimed was his first adulterate encounter Synonyms adulterous, adulterine, extracurricular, extramarital, two-timingRelated Words premarital; promiscuous

to alter (something) for the worse with the addition of foreign or lower-grade substances the company was fined for adulterating its “all beef” frankfurters with cereal Synonyms cut, dilute, extend, lace, sophisticate, thin, water down, weaken Related Words load; befoul, contaminate, corrupt, defile, dirty, envenom, foul, infect, poison, pollute, soil, spoil, sully, taint; cheapen, debase, degrade; manipulate, misrepresent, tamper (with); counterfeit, fake, falsify, fudge; doctor, spike; attenuate, moderate, qualify, temper Near Antonyms fertilize, lard; augment, reinforce (also reenforce), supplement; decontaminate, purify; clarify, clean, cleanse, distill (also distil), filter, flush, leach, pasteurize, purge, refine; better, enhance, improve; compact, concentrate, condense Antonyms enrich, fortify, richen, strengthen