Word.ws English Dictionary

flatlined

flatlined is the simple past and past participle of flatline.

Meaning of flatline

Verb

flatline (third-person singular simple present flatlines, present participle flatlining, simple past and past participle flatlined)

  1. (intransitive) To stop beating.
  2. (broadly, intransitive) To die.
  3. (slang, transitive) To kill.
    • If looks could kill, Mona's sharp gaze would have flatlined him in one second.2013, Shobha Nihalani, Nine
  4. (informal, intransitive) To remain at the same level, without development; or, to fall.
    • The economy in Northern Ireland is flatlining and jobs are scarce.2012, The Guardian, National Trust attempts to block £100m Giant's Causeway golf course
  5. To experience significantly decreased rates of change compared to previous rates of change.
    • Upon upload, the video got 1,000 views/day for the first week, then flatlined and started getting fewer than ten views/day.
  6. (intransitive) To fish using a flatline.

See all 10 meanings of flatline

Questions about flatlined

What is flatlined the simple past and past participle of?
Flatlined is the simple past and past participle of flatline.

Words near flatlined in the dictionary

  1. flatless
  2. flatlet
  3. flatlets
  4. Flatley
  5. flatline
  6. flatlined
  7. flatliner
  8. flatliners
  9. flatlines
  10. flatling
  11. flatlings

Source and license

Adapted from Wiktionary: flatlined (page history and authors); flatline (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “flatlined.” Word.ws, https://word.ws/flatlined. Based on Wiktionary, CC BY-SA 4.0.