fact of life

noun

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

   Old age is a fact of life.

Word History and Origins

Origin of fact of life¹

First recorded in 1850–55

Idioms and Phrases

Idioms

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

   to teach children the facts of life.

Example Sentences

Most shockingly, he claimed that he and Vance were not that far apart on gun control, an issue that Vance has handled so poorly that it created its own crisis cycle for the Trump-Vance campaign when he recently called school shootings a “fact of life.”

From Slate

"Deaths of despair" — which Anne Case and Angus Deaton write about in their book by that name — are a fact of life here.

From Salon

In statewide races for federal office in Maryland, that 2-to-1 margin for Democrats has become a fact of life.

From Slate

“We refuse to accept shootings at schools, parks and concerts as a normal fact of life. While we fought for the court to go further, today’s ruling affirms our state’s authority to limit guns in many public places,” Newsom said in a statement.

From Los Angeles Times

Republican Vice Presidential nominee JD Vance said that school shootings were simply a “fact of life” after a shooting at a Georgia high school left four dead — the 45th school shooting in the United States so far this year.

From Salon