middle age

middle age (uncountable)

1. That period of life directly preceding old age, often defined roughly as ages 45–65; midlife.
   • 2017 January 26, Christopher D. Shea, “T2 Trainspotting’: The Early Reviews”, in New York Times‎:

     The sequel checks in with the unmoored but largely lovable characters from the first movie as they face middle age.

• middle-age spread

• middle-aged
• middle-agedness

• Middle Ages