possible profanity
1
ever-durable
1
ever-during
1
ever-fresh
1
extended
1
forever(lasting, permanent, everlasting, unending, undying)
1
girlish
1
hoary
1
immortality
1
indefinite(lasting, permanent, everlasting, unending, undying)
1
invariable(adjective, fixed, unchanging, permanent, immovable)
1
long-lived
1
long-term
1
never becoming old(expression, idiom)
1
nonstop
1
nonterminous
1
of old
1
of yore
1
olamic
1
old
1
old-time
10 years ago|9.8k views|share |citing 
APASmart Define. (2016). ageless thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/ageless/thesaurus/synonyms
ChicagoSmart Define. 2016. "ageless thesaurus" https://smartdefine.org/ageless/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, ageless thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/ageless/thesaurus/synonyms>.
MLASmart Define. "ageless thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/ageless/thesaurus/synonyms>