longest

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extended in space or time adj.
interminable, excessive in length adj.

ADJECTIVE

extended in space or time

Synonyms

STRONGEST

deep great high lengthy protracted tall

STRONG

continued elongate elongated enduring enlarged expanded lasting lengthened lingering prolonged running stretch stretched stretching sustained towering

WEAK

distant drawn out extensive far-off far-reaching faraway gangling lanky lofty longish outstretched rangy remote spread out spun out stringy

Antonyms

STRONGEST

ignorant little low short small soft unimportant weak

WEAK

abbreviated abridged ephemeral evanescent fleeting

ADJECTIVE

interminable, excessive in length

Synonyms

STRONGEST

late lengthy protracted slow

STRONG

delayed diffuse dragging lingering prolonged sustained

WEAK

boundless diffusive dilatory drawn-out for ages forever and a day limitless long-drawn-out long-winded overlong prolix tardy unending verbose without end wordy

Antonyms

STRONGEST

on time

WEAK

abbreviated abridged ephemeral evanescent fleeting short

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.

See Examples For:

longest

"This is the longest lasting prompt X-ray flash ever observed from a neutron star merger," said graduate student Niccolò Passaleva, who led the follow-up observations using the VLT in Chile.

From Science Daily ● Sep. 30, 2026

The biggest ideas have the longest timeframe and, perhaps, the greatest need for a lengthy debate in their gestation.

From BBC ● Sep. 29, 2026

We now call it the Long Depression, still the longest recession in American history.

From MarketWatch ● Sep. 29, 2026

The sighting of the extremely venomous viper, which has the longest fangs of any snake in the world, spurred the Santa Ana Police Department to issue a public advisory accompanied by exclamation points.

From Los Angeles Times ● Sep. 29, 2026

Ma carried him in to his room and stayed there whispering to him for the longest time.

From "Worth" by A. LaFaye