Synonyms of contaminated

contaminated 1 of 2

adjective

kən-ˈta-mə-ˌnā-təd 

as in polluted

containing foreign or lower-grade substances

the hospitals had no choice but to throw out the contaminated blood supply

Synonyms & Similar Words

• polluted
• thinned
• diluted
• dilute
• tainted
• adulterated
• mixed
• blended
• impure
• alloyed
• weakened
• soiled
• combined
• corrupted
• spoiled
• unfiltered
• compounded
• adulterate
• fouled
• dirtied
• debased
• defiled
• incorporated
• unclarified
• commingled
• begrimed
• merged
• intermingled
• sullied
• mingled
• intermixed
• befouled
• unrefined
• besmirched
• maculate
• bemired
• coalesced
• doctored
• cheapened

Antonyms & Near Antonyms

• uncontaminated
• pure
• fine
• unpolluted
• undiluted
• untainted
• unmixed
• uncut
• unadulterated
• purified
• refined
• unalloyed
• filtered
• plain
• concentrated
• straight
• neat
• strong
• ultrapure
• sterile
• uncombined
• pasteurized
• clean
• clarified
• sterilized
• ultrarefined
• stainless
• spotless
• immaculate
• unsullied
• unsoiled

contaminated

2 of 2

verb

past tense of contaminate

as in poisoned

to make unfit for use by the addition of something harmful or undesirable

a supply of drinking water that was contaminated by a toxic waste dump

Synonyms & Similar Words

• polluted
• poisoned
• tainted
• infected
• defiled
• fouled
• befouled
• stained
• soiled
• diluted
• sullied
• adulterated
• smudged
• dirtied
• blackened
• corrupted
• rotted
• mired
• muddied
• besmirched
• begrimed
• spoiled
• grimed
• watered down
• smirched
• fouled up
• doctored

Antonyms & Near Antonyms

• purified
• cleaned
• distilled
• cleared
• cleansed
• decontaminated
• purged
• filtered
• clarified
• sterilized
• disinfected
• sanitized

Example Sentences

Recent Examples of contaminated

Adjective

Massachusetts has seen more than 100 cyclospora cases this summer, the state Department of Public Health said Wednesday, with some illnesses apparently linked to contaminated lettuce. — Neal Riley, CBS News, 5 Aug. 2026

The parasite infects food that has come into contact with human feces, most commonly when produce is irrigated or washed with contaminated water. — Los Angeles Times, 3 Aug. 2026

Verb

Two complementary bills approved Monday ensure homes that survive a wildfire but are contaminated by the onslaught of smoke are properly remediated before residents move back in. — Noah Haggerty, Los Angeles Times, 1 Sep. 2026

Drinking contaminated water does not present a risk, and the infection does not spread from one person to another. — Melissa Rudy, FOXNews.com, 1 Sep. 2026