FLATLINE Synonyms: 46 Similar and Opposite Words

flatline

verb

ˈflat-ˌlīn

Definition of flatline

as in to die

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

Synonyms & Similar Words

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Antonyms & Near Antonyms

Example Sentences

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 flatline Enrollment is declining across the board in traditional public schools as the national birthrate continues to fall, charter school enrollment remains robust, private school voucher use increases and the number of immigrant students has flatlined. — Austin Horn july 3, Miami Herald, 3 July 2026 Last year, the stock flatlined despite big data center order growth. — Morgan Chittum, CNBC, 1 July 2026 For the past decade, the British economy has flatlined, while its population has become older, sicker, and no more productive. — Sam Knight, New Yorker, 22 June 2026 Specifically, the Xbox Series generation appears to be close to flatlining. — Paul Tassi, Forbes.com, 11 June 2026 See All Example Sentences for flatline

Recent Examples of Synonyms for flatline

Verb

Carlile remembered the Country Music Hall of Fame member, who died Tuesday at 80 after a brief battle with cancer, in a social media post.

— Joseph Hudak, Rolling Stone, 26 Aug. 2026
Dolly Parton, the undisputed queen of country music, died on Tuesday, August 25.

— Allison DeGrushe, StyleCaster, 25 Aug. 2026

Definition of die

Verb

The continent's sweltering summer has meanwhile boosted demand for air conditioning and other energy-hungry appliances at a time when demand for gas, widely used for Europe's heating and cooking needs, naturally falls.

— Jenni Reid, CNBC, 27 Aug. 2026
The Oscar winner paired a leopard-print Givenchy fall 2026 dress and the fashion house’s modern take on T-strap high heels.

— Karla Rodriguez, Footwear News, 27 Aug. 2026

Definition of fall

Browse Nearby Words

flatlets

flatline

flatlined

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“Flatline.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/flatline. Accessed 1 Sep. 2026.

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Synonyms of flatline

verb

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