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fastest

ADJECTIVE

speedy

Synonyms

STRONGEST

agile brisk hot nimble quick rapid swift

STRONG

accelerated active dashing electric flashing fleet fleeting flying hurried racing ready snap winged

WEAK

PDQ blue streak breakneck chop-chop double-time expeditious expeditive hairtrigger hasty hypersonic in a jiffy in nothing flat lickety split like a bat out of hell like all get out like crazy like mad on the double posthaste presto pronto screamin' snappy speedball supersonic velocious

Antonyms

STRONGEST

clumsy slow sluggish

STRONG

boring dull

WEAK

flexible good impermanent insecure loose moral movable plodding tardy unattached unfixed unhurried upright

ADJECTIVE

fixed, immovable

Synonyms

STRONGEST

durable stable sure tight true

STRONG

adherent attached close constant constrained faithful fastened firm fortified glued held lasting permanent secure set sound staunch stuck wedged

WEAK

ardent impregnable indelible inextricable loyal resistant resolute steadfast tenacious true blue unwavering

Antonyms

STRONGEST

wobbly

STRONG

changeable disloyal ending ephemeral flexible inaccurate inconstant indefinite irresolute loose moving open soft temporary uncertain undecided unfixed unprotected unreliable unstable untrue wavering weak

WEAK

good impermanent insecure moral movable plodding slow tardy unattached unhurried upright

ADJECTIVE

immoral, promiscuous

Synonyms

STRONGEST

easy loose

STRONG

bawdy debauched depraved dissipated gadabout libertine light profligate wanton wild

WEAK

careless devil-may-care dissolute extravagant flirtatious frivolous giddy incontinent indecent intemperate lascivious lecherous lewd libidinous licentious lustful rakish reckless salacious self-gratifying self-indulgent sportive sporty unchaste

Antonyms

STRONGEST

strict

STRONG

careful chaste clean decent gentle good moral nice pure uncorrupt virtuous

WEAK

flexible impermanent insecure movable plodding slow tardy unattached unfixed unhurried upright

ADVERB

speedily

Synonyms

STRONGEST

quick quickly rapidly soon swift swiftly

WEAK

apace chop-chop expeditiously flat-out fleetly full tilt hastily hurriedly in a flash in haste in nothing flat in short order like a flash like a shot like greased lightning like wildfire posthaste presto promptly pronto

Antonyms

STRONGEST

slowly

WEAK

loosely slow unfixedly

ADVERB

fixedly

Synonyms

STRONGEST

hard tight

STRONG

firm

WEAK

deeply firmly securely solidly soundly steadfastly tightly

Antonyms

WEAK

loosely slow slowly unfixedly

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.

The Liverpool lads travelled the fastest overall from Palermo in sunny Sicily, Italy, to the snow-covered Hatgal in northern Mongolia - via the ancient Silk Road.

From BBC • May 21, 2026

Army Corps of Engineers and the EPA, had touted the fire recovery as the fastest in modern history.

From Los Angeles Times • May 21, 2026

On Wednesday, Target reported comparable sales growth of 5.6%, the fastest growth in four years.

From MarketWatch • May 21, 2026

Refuge sites located out of “waves’ reach” were identified and validated by local authorities, and evacuation routes were devised using algorithms to find the fastest routes.

From Science Daily • May 21, 2026

He alternated between doing the crawl, which was fastest, and the breaststroke, which was slower but allowed him to see where he was going and to see what else was floating toward him.

From "Earthquake Terror" by Peg Kehret