Synonyms of impure

impure

adjective

(ˌ)im-ˈpyu̇r 

1

as in polluted

containing foreign or lower-grade substances

be careful, because impure motor oil can damage your car's engine

Synonyms & Similar Words

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

Antonyms & Near Antonyms

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

2

as in vulgar

depicting or referring to sexual matters in a way that is unacceptable in polite society

Victorian notions of what qualified as impure art now strike us as laughable

Synonyms & Similar Words

• vulgar
• obscene
• pornographic
• foul
• dirty
• filthy
• nasty
• crude
• gross
• unacceptable
• suggestive
• undesirable
• indecent
• profane
• blue
• unpleasant
• offensive
• lewd
• coarse
• naughty
• lascivious
• disgusting
• unwanted
• obnoxious
• raunchy
• abusive
• bawdy
• smutty
• ribald
• trashy
• unprintable
• wanton
• locker-room
• gutter
• stag
• wicked
• perverted
• depraved
• X-rated
• objectionable
• porny
• infamous
• broad
• earthy
• soft
• repulsive
• salacious
• indelicate
• loathsome
• immodest
• repugnant
• coarse-grained
• indecorous
• unbecoming
• unwelcome
• salty
• abhorrent
• scatological
• perverse
• revolting
• low
• kinky
• gamy
• racy
• off
• barnyard
• distasteful
• exceptionable
• reprehensible
• blameworthy
• censurable
• repellent
• risqué
• off-color
• blamable
• scurrilous
• louche
• atrocious
• debasing
• hard-core
• soft-core

Antonyms & Near Antonyms

• wholesome
• clean
• decent
• proper
• puritanical
• correct
• Victorian
• prudish
• staid
• acceptable
• desirable
• polite
• prim
• innocuous
• respectable
• pure
• appropriate
• nice
• decorous
• genteel
• pleasant
• suitable
• priggish
• inoffensive
• agreeable
• nonobscene
• welcome
• pleasing
• G-rated
• becoming
• straitlaced
• meet
• seemly
• perfect
• spotless
• virginal
• fit
• immaculate
• endorsed
• approved
• sanctioned

Example Sentences

Recent Examples of impure

Curtain calls In 1900, more than 6,000 people in England were poisoned by beer that had been brewed using impure sulfuric acid containing arsenic. — Scott Lafee, San Diego Union-Tribune, 2 Sep. 2025

This method combines impure raw silicon with pure aluminum, lowering the melting temperature compared to conventional polysilicon production. — Jijo Malayil, Interesting Engineering, 12 Aug. 2025

Women who are menstruating are traditionally not allowed to enter temple grounds, as it's considered impure in Balinese Hinduism. — Zahra Surya Darma, Condé Nast Traveler, 25 July 2025

The trash is heated to break it into crude, impure syngas, which is then zapped with plasma torches to further refine it. — IEEE Spectrum, 22 Nov. 2011