Word.ws English Dictionary

flatliner

flatliner noun: an angler who uses a flatline.

Noun

flatliner (plural flatliners)

  1. An angler who uses a flatline.
  2. (rare) A patient with no heartbeat.
    • […]unless my heart stops, okay? Nada — unless I'm a flatliner."1996, Bill Butterworth, Butterworth gets his life together, page 144
    • In spite of his dramatic highs and the canyon lows, Kurt was a flatliner—a patient with no heartbeat.1998, George Mckinney, Cross the Line

Forms of flatliner

pluralflatliners

Origin of flatliner

From flatline + -er.

Questions about flatliner

What does flatliner mean?
Flatliner means an angler who uses a flatline.
What part of speech is flatliner?
Flatliner is a noun.
What is the plural of flatliner?
The plural of flatliner is flatliners.

Words near flatliner in the dictionary

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

Source and license

Adapted from Wiktionary: flatliner (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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Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Flame, not lame-flatliner.wav.

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