Word.ws English Dictionary

serious as a heart attack

serious as a heart attack adjective: completely serious and not joking at all.

Adjective

serious as a heart attack

  1. (US, informal, simile) Completely serious and not joking at all.

Questions about serious as a heart attack

What does serious as a heart attack mean?
Serious as a heart attack means completely serious and not joking at all.
What part of speech is serious as a heart attack?
Serious as a heart attack is an adjective.

Words near serious as a heart attack in the dictionary

  1. serioludicrous
  2. seriosities
  3. seriositude
  4. seriosity
  5. serious
  6. serious as a heart attack
  7. serious-minded
  8. serious-mindedly
  9. serious-mindedness
  10. seriouser
  11. seriousest

Source and license

Adapted from Wiktionary: serious as a heart attack (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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