as in to die
to stop living
the patient was fading fast, and doctors expected him to flatline before the night was over
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Recent Examples of flatline
However, in practice, the drama of this World War II spy saga seldom lives up to the filmmaker’s lofty aesthetic goals, resulting in a tale of torture and human fragility that flatlines long before its central martyr.
—
Siddhant Adlakha, Variety, 17 May 2026
But while exports are booming, wage growth in the two-track economy has flatlined.
—Semafor Events, semafor.com, 24 Apr. 2026
Fisk was left devastated as doctors rushed in, but were unable to save his wife, who flatlined and died.
—Brendan Morrow, USA Today, 15 Apr. 2026
On the whole, Tesla has performed well financially, although its annual revenue growth has flatlined in recent years.
—Mary Cunningham, CBS News, 1 Apr. 2026
See All Example Sentences for flatline
Siddhant Adlakha, Variety, 17 May 2026
But while exports are booming, wage growth in the two-track economy has flatlined.
—Semafor Events, semafor.com, 24 Apr. 2026
Fisk was left devastated as doctors rushed in, but were unable to save his wife, who flatlined and died.
—Brendan Morrow, USA Today, 15 Apr. 2026
On the whole, Tesla has performed well financially, although its annual revenue growth has flatlined in recent years.
—Mary Cunningham, CBS News, 1 Apr. 2026
See All Example Sentences for flatline
Recent Examples of Synonyms for flatline
Verb
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Last year, around 13,000 of a population of 17,000 elephant seal pups died there in just a few months after being exposed.—
Brie Stimson,
FOXNews.com,
21 June 2026
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Daveigh, best known for playing Samara Morgan in The Ring and voicing Lilo in Lilo & Stitch, died at 35, PEOPLE confirmed on Wednesday, June 17.—
Bailey Richards,
PEOPLE,
21 June 2026
Verb
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Scheffler, who fell nine shots behind with a pair of bogeys at the start, shot 32 on the back nine by chipping in from 65 feet on the 14th for the start of three straight birdies.—
Doug Ferguson,
Los Angeles Times,
21 June 2026
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Overall homicides in the United States have fallen for four consecutive years, according to FBI data analyzed by the Washington Post.—
Sara-James Ranta,
The Orlando Sentinel,
20 June 2026
Cite this Entry
“Flatline.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/flatline. Accessed 22 Jun. 2026.
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