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What is the verb for flatline?

What's the verb for flatline? Here's the word you're looking for.

flatline
  1. (intransitive, of the heart) To stop beating.
  2. (intransitive, by extension) To die.
  3. (transitive, slang) To kill.
  4. To stay at the same level, without development; or, to fall.
  5. Synonyms:
  6. Examples:
    1. “After hours of failed attempts to revive the patient, the doctor sadly pronounced him flatline.”
      “Despite his best efforts, John's career flatlined as he struggled to secure any promotions or advancements.”
flatlines
  1. Third-person singular simple present indicative form of flatline
  2. Synonyms:
  3. Examples:
    1. “Firefox no longer has its moral high-horse, and that leaves its fragile state without anyone to resuscitate it if flatlines.”
      “The peaks and flatlines he has experienced during the club's European sorties have been akin to those that would register on a seismograph representing a 9.8 quake.”
      “Or the way it flatlines, in its final chapters, into long descriptions of bird watching.”
flatlined
  1. simple past tense and past participle of flatline
  2. Synonyms:
  3. Examples:
    1. “As Fine Gael flatlined in the opinion polls, Bruton was ditched as party leader in favour of Michael Noonan.”
      “Anheuser has posted double-digit profit gains for 20 straight quarters, while its nearest competitors, Coors and Miller, have flatlined.”
      “In the late 1970's in a Perth hospital I collapsed into a coma and then flatlined.”
flatlining
  1. present participle of flatline
  2. Synonyms:
  3. Examples:
    1. “With most European stocks flatlining, investors are hungry for shares of companies benefiting from fast-paced growth in Latin America.”
      “This time around, both the U.S. and German economies are flatlining, while that of Japan continues its slow, downward spiral.”
      “With the Tories flatlining at the same level as in 2001, the Liberal Democrats and smaller parties have been the beneficiaries.”
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