middle age

noun

: the period of life from about 45 to about 64

middle-aged

ˌmi-dᵊl-ˈājd 

adjective

middle-ager

ˌmi-dᵊl-ˈā-jər 

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

Moss documented another rafting trip with those friends in 2003’s The Same River Twice, his chums then in middle age. — Matthew Carey, Deadline, 5 Nov. 2026

Hong Kong — Joshua Wong, once a teenage figurehead of Hong Kong’s democracy movement, faces the prospect of entering middle age in prison, after a court Thursday meted out a 10-year sentence over a second national security conviction. — Chris Lau, CNN Money, 5 Nov. 2026

The decade added Thursday means Wong will be locked up into middle age. — Editorial Board, Washington Post, 5 Nov. 2026

But middle age looks good on Johnson, and his commitment to the hits delivered a wave of feel-good moments throughout the quasi-beach party. — Darah Head, HollywoodReporter, 12 Oct. 2026

Word History

First Known Use

14th century, in the meaning defined above

Rhymes for middle age

• disengage
• interstage
• macrophage
• multistage
• alienage
• assuage
• backstage
• bocage
• downstage
• engage
• enrage
• leafage

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 

: the period of life from about 45 to about 64 years of age

middle-aged

ˌmid-ᵊl-ˈājd 

adjective