middle age

American  

noun

1. the period of human life between youth and old age, sometimes considered as the years between 45 and 65 or thereabout.

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middle age British  

noun

1. the period of life between youth and old age, usually (in man) considered to occur approximately between the ages of 40 and 60

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Etymology

Origin of middle age

Middle English word dating back to 1350–1400

Example Sentences

See Examples For:

middle age

Earlier research had already found signs of unusually high brain activity in human APOE4 carriers before middle age.

From Science Daily ● Aug. 23, 2026

“This means that children in the U.S. today are less likely to survive to adulthood and young adults are less likely to reach middle age than in prior years,” Woolf said.

From Salon ● Aug. 11, 2026

After spending the first season trying to outrun the consequences of losing his job, his marriage and his place among Westchester’s elite, time — and middle age — have finally caught up with him.

From Los Angeles Times ● Aug. 4, 2026

But I found that I was not immune to being introspective about middle age.

From The Wall Street Journal ● Jul. 29, 2026

Although Billy was in middle age, Grandfather considered him a boy.

From "The Red Pony" by John Steinbeck

Related Words

• midlife