Synonyms of flatlined

flatlined

verb

past tense of flatline

as in died

to stop living

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

Synonyms & Similar Words

• died
• fell
• perished
• disappeared
• succumbed
• ended
• expired
• departed
• faded
• went
• exited
• deceased
• dropped
• demised
• passed (on)
• croaked
• bought it
• parted
• passed away
• checked out
• stepped out
• kicked off
• kicked in
• snuffed it
• popped off
• gave up the ghost
• conked (out)
• pegged out
• failed
• kicked the bucket
• consumed
• bit the dust
• dried up
• predeceased

Antonyms & Near Antonyms

• lived
• breathed
• revived
• came to
• lingered
• existed
• was
• flourished
• prospered
• subsisted
• thrived

Example Sentences

Recent Examples of flatlined

Surprisingly, OpenAI’s overall usage within enterprises completely flatlined from about October 2025 to December 2025. — Emily Forlini, Fortune, 13 Aug. 2026

The star flatlined twice and underwent a 10-hour surgery before he was put on an extracorporeal membrane oxygenation (ECMO) machine for a week. — Rachel Desantis, PEOPLE, 13 Aug. 2026

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

After the disappointment of Die, My Love, another star vehicle from an auteur director that flatlined at theaters, the distributor needs a win. — Mia Galuppo, HollywoodReporter, 23 June 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

The organization's learning velocity has flatlined. — John Winsor, Forbes.com, 27 May 2026

After a busy April that featured multiple severe weather outbreaks across the United States, tornado activity has flatlined this month. — Matthew Cappucci, Washington Post, 26 May 2026