time flies

TYM FLYZ /taɪm flaɪz/
idiomA2IELTSTOEFL
informal

Time passes very quickly, especially when you are busy or enjoying yourself.

A common observation about the subjective nature of time.

The story behind the word. This is a translation of the Latin phrase 'Tempus fugit', famously used by the Roman poet Virgil. It has been a staple of Western literature for over two millennia.

Word relationships

  • time slips away: 'Time slips away' sounds more regretful; 'time flies' is more of a surprised observation.
  • time drags: 'Time drags' means time feels very slow.

Commonly confused with

  • in the blink of an eye: 'Time flies' refers to a period (hours, years); 'in the blink of an eye' refers to a single moment.

Collocations

  • time flies when
  • how time flies
  • time really flies

Example sentences

  • "Sed fugit interea, fugit inreparabile tempus. (But meanwhile, time flies; it flies, never to be recovered.)" Classic Literature
  • "I can't believe it's already midnight; time flies when you're having fun!" Social gathering

Memory hook

Imagine a clock with wings flying out the window. Wings on the clock.

When not to use

Rarely used in formal scientific writing about physics.

Fun facts

  • Tempus fugit is often inscribed on sundials and grandfather clocks.
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