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

Over half of the surfaces were found to have high enough levels of bacteria, yeast or mold to put someone at risk for infection, with the headrest the most contaminated area. — Kathleen Wong, USA Today, 28 July 2026

Beyond the contaminated water, Detwiler says, they're linked to frequent illness outbreaks and can be notoriously difficult to trace back to their source. — Angela Haupt, Time, 23 July 2026

Verb

The inspector noted that some shelves appeared to be contaminated with urine and would need to be cleaned or replaced. — Harriet Ramos, Fort Worth Star-Telegram, 30 July 2026

The lawsuit alleges he was held by his legs and dunked headfirst in a bucket of cold water contaminated with human feces. — Cuyler Dunn, Kansas City Star, 29 July 2026