middle age

noun

Synonyms of middle agenext
: the period of life from about 45 to about 64
middle-aged adjective
middle-ager noun

Examples of middle age in a Sentence

as our generation approaches middle age The patient was in late middle age. He feared the approach of middle age.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Gadiano worked in the fields off and on from childhood into middle age. Kerry Klein, NPR, 31 Mar. 2026 The interviewer is an unnamed writer in early middle age, the usual Lerner proxy. Giles Harvey, New Yorker, 30 Mar. 2026 Studies suggest that starting in middle age, nerve cells in the locus coeruleus may get damaged by tau buildup, and that damage may correlate with declines in memory. Elizabeth Riley, The Conversation, 26 Mar. 2026 Many pop stars mellow into stately eminence in middle age, as Madonna (temporarily) did in her late 30s with 1998’s Ray of Light. Spencer Kornhaber, The Atlantic, 11 Mar. 2026 See All Example Sentences for middle age

Word History

First Known Use

14th century, in the meaning defined above

Time Traveler
The first known use of middle age was in the 14th century

Browse Nearby Words

Cite this Entry

“Middle age.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/middle%20age. Accessed 4 Apr. 2026.

Kids Definition

middle age

noun
: the period of life from about 45 to about 64
middle-aged
ˌmid-ᵊl-ˈājd
adjective

Medical Definition

middle age

noun
mid·​dle age ˌmid-ᵊl-ˈāj How to pronounce middle age (audio)
: the period of life from about 45 to about 64 years of age
middle-aged adjective

More from Merriam-Webster on middle age

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster