adjective
1.
being in the declining phase of life
aged pensioners
Synonyms: ancient, elderly, old, olden
Related Word: pensioned (off), retired, superannuated; senior; hoary, patriarchal, venerable; doddering, senescent, senile, tottery
Idioms: along in years, getting on, getting on ( or along) in years, gray with age, on one's last legs, stricken with years
Contrasted words: juvenile, puerile
Antonyms: youthful
2.
Synonyms: ancient 1, age-old, antediluvian, antique, hoary, Noachian, old, timeworn, venerable
3.
Synonyms: ripe 3, matured, mellow, ripened