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

But the service makes it possible to travel around 5,000km by rail from Portugal's Algarve to Finland's northernmost train station of Kolari - believed to be the longest train route in Europe.

From BBC ● Aug. 10, 2026

Then there are the overseas territories, which require France to post immigration officers across 12 time zones, including France’s longest border, the jungled 450 miles between French Guyana and Brazil.

From The Wall Street Journal ● Aug. 7, 2026

The longest words in yesterday’s game were LAYAWAY, PAPALLY, and PAYWALL.

From Slate ● Aug. 5, 2026

Some chasers are already planning for a total eclipse next year that will be the longest humans will be able to see until 2114.

From Barron's ● Aug. 5, 2026

She had the longest nose in North America.

From "The Teacher’s Funeral" by Richard Peck