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dirtiest

ADJECTIVE

soiled, unclean

Synonyms

STRONGEST

contaminated crummy disheveled dusty filthy greasy grimy messy muddy murky nasty polluted sloppy stained unkempt

STRONG

bedraggled begrimed black defiled disarrayed foul fouled smudged spattered spotted sullied

WEAK

cruddy dishabille dreggy dungy grubby grungy icky lousy mucky mung pigpen raunchy scummy scuzzy slatternly slimy slovenly smutty sooty squalid straggly undusted unhygienic unlaundered unsanitary unsightly unswept untidy unwashed yucky

Antonyms

STRONGEST

bright clean clear decent neat ordered orderly pure sterile tidy

STRONG

good

WEAK

moral nice spotless upright

ADJECTIVE

obscene, pornographic

Synonyms

STRONGEST

coarse filthy nasty

STRONG

base blue low mean unclean

WEAK

contemptible despicable immoral impure indecent lewd off-color ribald risqué salacious scatological scurvy smutty sordid squalid unchaste uncleanly vile vulgar

Antonyms

STRONGEST

clean decent

STRONG

happy honest moral noble

WEAK

nice pure spotless sterile upright

ADJECTIVE

dishonest

Synonyms

STRONGEST

sleazy

STRONG

cheating corrupt crooked foul

WEAK

below the belt deceitful double-dealing shabby shady shifty sneaky sordid underhanded unethical unscrupulous untruthful

Antonyms

STRONG

clean good honest moral pure

WEAK

nice spotless sterile upright

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

But so far, there’s been no technological solution to what is often the dirtiest part of an audit: counting inventory.

From The Wall Street Journal • Apr. 7, 2026

Rising natural-gas prices boost the dirtiest fossil fuel.

From The Wall Street Journal • Mar. 5, 2026

“We were always told that coal is the dirtiest fuel,” Fox Business host Stuart Varney observed to Burgum during an on-air interview last month.

From Los Angeles Times • Mar. 5, 2026

If not done carefully, bioenergy projects run the risk of emitting carbon — not sequestering it — and polluting communities already grappling with some of the state’s dirtiest air.

From Los Angeles Times • Sep. 30, 2025

He lifted out the dirtiest, most ragged pair of britches I had ever seen in my life.

From "Summer of the Monkeys" by Wilson Rawls