FLATLINES Synonyms: 46 Similar and Opposite Words

flatlines

verb

present tense third-person singular of flatline

as in dies

to stop living the patient was fading fast, and doctors expected him to flatline before the night was over

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Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of flatlines Leaders become the bottleneck, the team defaults to the law of least effort, and performance flatlines. — Expert Panel®, Forbes.com, 28 May 2026 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 Take women out of the equation, and middle-class income essentially flatlines for four decades. — Katica Roy, Fortune, 21 Apr. 2026 Every time the plot hits the reset button, the tension flatlines. — Justin Chang, New Yorker, 14 Oct. 2025

Recent Examples of Synonyms for flatlines

Verb

Making people’s lives better does not mean having a symbolic vote on something that goes to the Senate and dies — that’s what the Republicans have done for two years.

— Mathew Miranda, Sacbee.com, 24 Sep. 2026
Using the X-ray spacecraft XRISM (X-ray Imaging and Spectroscopy Mission), astronomers have observed stellar winds from a hypergiant star feeding an extreme stellar remnant known as a neutron star, left over after a massive star dies.

— Robert Lea, Space.com, 24 Sep. 2026

Definition of dies

Verb

Because every moment is narrated in Ugandan Sign Language and International Sign, Deaf travelers are more deeply immersed in the experience, and a welcome hush falls over the environment—which is, surprise, appreciated by the wildlife too.

— CNT Editors, Condé Nast Traveler, 22 Sep. 2026
However, the salt can solidify if its temperature falls too close to its freezing point.

— Georgina Jedikovska, Interesting Engineering, 22 Sep. 2026

Definition of falls

Verb

In The Children, sister and brother Guinevere and Ennis grow up under the shadow of their mother, Edith Sharpe, whose Ninth City children’s book series transfixes the world until Edith perishes in a mysterious fire in Vermont.

— Hamilton Cain, Time, 7 July 2026
Every soldier Harry would have saved on a transport during the war perishes too.

— Margaret Heidenry, Vanity Fair, 24 Dec. 2025

Definition of perishes

Verb

Wolf succumbs to Shura, a demonic force in the game’s mythology that possesses those who give in to bloodlust.

— Aman Kumar, Encyclopedia Britannica, 27 Aug. 2026
Vhagar dies in the crash and Caraxes succumbs to his injuries a few days after crawling out and into the bowls of Harrenhal.

— James Grebey, Vulture, 10 Aug. 2026

Definition of succumbs

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flatlined

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flatlining

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“Flatlines.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/flatlines. Accessed 25 Sep. 2026.

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Synonyms of flatlines

verb

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