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Synonyms

fact of life

American  

noun

  1. any aspect of human existence that must be acknowledged or regarded as unalterable.

    Old age is a fact of life.


idioms

  1. facts of life, the facts concerning sex, reproduction, and birth.

    to teach children the facts of life.

Etymology

Origin of fact of life

First recorded in 1850–55

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Artificial intelligence has become a fact of life in the U.S., with people increasingly using it at work, school and home.

From The Wall Street Journal • May 20, 2026

With the ongoing shutdown of the federal government, travelers are starting to find that flight delays and cancellations are becoming a fact of life.

From MarketWatch • Oct. 8, 2025

Another traveller, Paul Weallans, described the strikes as "a fact of life in London" and hoped a resolution would "not be a long time coming".

From BBC • Sep. 8, 2025

Training accidents are a fact of life in the military.

From Salon • Apr. 1, 2025

The biologic science of recent years has been making this a more urgent fact of life.

From "The Lives of a Cell" by Lewis Thomas

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