Word.ws English Dictionary

lose sleep

lose sleep verb: to worry.

Verb

lose sleep (third-person singular simple present loses sleep, present participle losing sleep, simple past and past participle lost sleep)

  1. (often) To worry.
    • I won't be losing sleep over the national budget deficit.
    • What keeps you awake at night?
      Worry about being self-employed. Nowadays, I don’t lose sleep over my divorce—I did for about a year.2019 December 14, Rosanna Greenstreet, “Laurence Fox: ‘I don’t lose sleep over my divorce – I did for about a year’”, in The Guardian, →ISSN

Forms of lose sleep

third-person singular presentloses sleep
present participlelosing sleep
past participlelost sleep
pastlost sleep

Questions about lose sleep

What does lose sleep mean?
Lose sleep means to worry.
What part of speech is lose sleep?
Lose sleep is a verb.
What is the past tense of lose sleep?
The past tense of lose sleep is lost sleep.

Words near lose sleep in the dictionary

  1. lose one's wits
  2. lose oneself
  3. lose out
  4. lose patience
  5. lose sight of
  6. lose sleep
  7. lose steam
  8. lose the battle, but win the war
  9. lose the bell
  10. lose the bubble
  11. lose the dressing room

Source and license

Adapted from Wiktionary: lose sleep (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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