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
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
Production flatlined, and employment declined.
—Paul S. Lavoie, Hartford Courant, 11 Mar. 2026
At the same time, soda popularity flatlined and wellness culture ascended.
—Ellen Cushing, The Atlantic, 25 Feb. 2026
Data from the Census Bureau indicates that median wages for full-time male workers have essentially flatlined since 1973.
—Mark Robert Rank, The Conversation, 6 Feb. 2026
See All Example Sentences for flatline
Mary Cunningham, CBS News, 1 Apr. 2026
Production flatlined, and employment declined.
—Paul S. Lavoie, Hartford Courant, 11 Mar. 2026
At the same time, soda popularity flatlined and wellness culture ascended.
—Ellen Cushing, The Atlantic, 25 Feb. 2026
Data from the Census Bureau indicates that median wages for full-time male workers have essentially flatlined since 1973.
—Mark Robert Rank, The Conversation, 6 Feb. 2026
See All Example Sentences for flatline
Recent Examples of Synonyms for flatline
Verb
-
In 2019, Elisa Serna died at the Las Colinas women’s jail after a doctor and nurse left her alone after watching her collapse.—
Kelly Davis,
San Diego Union-Tribune,
26 Apr. 2026
-
That’s the year the Boston Marathon suffered a terrorist attack in which three people died and hundreds more were injured.—
Cressida Leyshon,
New Yorker,
26 Apr. 2026
Verb
-
His portfolio fell 44% in the dot-com crash, and sustained a 40% loss in 2008.—
Terry Savage,
Chicago Tribune,
25 Apr. 2026
-
Lee then came up to the plate and fell behind in the count 1-2.—
Tony Gleason,
Daily News,
25 Apr. 2026
Cite this Entry
“Flatline.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/flatline. Accessed 1 May. 2026.
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