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.

The year-long stay will be among the longest in history, just shy of the 14-month record set by a Russian cosmonaut Valery Polyakov in 1995.

From BBC • May 25, 2026

The S&P 500 itself notched its longest weekly winning streak since 2023 ahead of the Memorial Day weekend.

From MarketWatch • May 22, 2026

Shares also closed higher for a sixth consecutive trading session, their longest winning streak since July 17, 2024, when they rose for eight straight trading days, according to Dow Jones Market Data.

From Barron's • May 22, 2026

The documented distance between sightings was 15,100 kilometers, setting a new record for the longest known movement of an individual humpback whale.

From Science Daily • May 20, 2026

It would be his longest, the longest for any pilot—from Pakistan all the way over Russia to an air base in northern Norway.

From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin