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longest

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.

Under the agreement, Boelter will face the longest possible sentence on each charge, according to U.S.

From The Wall Street Journal • Jun. 11, 2026

He launched aboard Soyuz MS-22 on Sept. 21, 2022, and returned on Sept. 27, 2023, after spending 371 days in orbit, setting the record for the longest single space mission by an American astronaut.

From Science Daily • Jun. 11, 2026

"It was the longest, hardest, most challenging season I've ever had," director of rugby Alex Sanderson admitted.

From BBC • Jun. 10, 2026

Next month's final, meanwhile, could well be the longest on record due to the decision to stage a Super Bowl-style halftime show, headlined by Madonna, Shakira and BTS.

From Barron's • Jun. 9, 2026

This was by far the longest speech anybody’d ever had out of Glenn.

From "The Teacher’s Funeral" by Richard Peck