5
overage
4
old
4
overaged
3
superannuated
2
ancient
2
elderly
2
gray
0
outdated
0
past it(expression, adjective, old)
0
past one's prime
0
past your prime(expression, adjective, idiom, old)
0
past your sell-by date(expression, idiom)
0
unyoung
13 years ago|1.2k views|share |citing 
APASmart Define. (2013). over-the-hill thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/over-the-hill/thesaurus/synonyms
ChicagoSmart Define. 2013. "over-the-hill thesaurus" https://smartdefine.org/over-the-hill/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2013, over-the-hill thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/over-the-hill/thesaurus/synonyms>.
MLASmart Define. "over-the-hill thesaurus" 28 June 2013. Web. 23 September 2026. <https://smartdefine.org/over-the-hill/thesaurus/synonyms>