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

She encountered a queue that ballooned to over 80,000 people—the longest in the museum’s history.

From The Wall Street Journal ● Oct. 4, 2026

Those whose tumors had high levels of the vitamin D receptor and who received paricalcitol also had the longest overall survival.

From Science Daily ● Oct. 4, 2026

The position goes to whoever has had the longest run on the council without being president.

From Barron's ● Oct. 2, 2026

Cortizo and I were surrounded by towers of crates as we spoke, at the end of the longest freight rail link in the world.

From BBC ● Oct. 1, 2026

After the longest morning of my life, I printed out all the letters I’d written, signed them and started delivering them face to face, like a man, like a soldier.

From "Liar, Liar" by Gary Paulsen