middle age

period of age beyond young adulthood but before the onset of old age

en-GB/ˈmɪdəl ˈeɪd͡ʒ/
en-US/ˈmɪdəl ˈeɪd͡ʒ/

Categories:

age of a persondevelopment of the human bodydemographic profilephase of human lifepopulation group