Word.ws English Dictionary

lights out

lights out noun: unconsciousness. Also the alternative form of lights-out.

Noun

lights out

  1. (idiomatic) Unconsciousness.
    • There had been one almighty BANG and then it had been lights out.2007, Kathryn Deans, Glow
    • It's lights out as Bruno is whacked on the back of his head with a black jack.2012, Anthony C. TriparI, Butchie, page 112

Also used as

lights out is also the alternative form of lights-out.

lights out is also the third-person singular simple present indicative of light out.

Questions about lights out

What does lights out mean?
Lights out means unconsciousness.
What part of speech is lights out?
Lights out is a noun.

Words near lights out in the dictionary

  1. lights o' love
  2. lights of one's eye
  3. lights off
  4. lights on
  5. lights one's hair on fire
  6. lights out
  7. lights someone's ass up
  8. lights the blue touchpaper
  9. lights the touch-paper
  10. lights the touchpaper
  11. lights up

Source and license

Adapted from Wiktionary: lights out (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: “lights out.” Word.ws, https://word.ws/lights_out. Based on Wiktionary, CC BY-SA 4.0.