4
long ago(expression, adverb, past, memories, old times)
3
once(adjective, adverb, late, old, past)
3
way back when(expression, adjective, idiom, late, old)
2
back when(expression, adjective, adverb, back, late)
2
early(adjective, late, old, past, previous)
2
since
2
time was(expression, adjective, adverb, back, late)
1
aeons ago
1
ago(adverb, past, before, previously, elsewhere)
1
ancient(adjective, late, old, past, previous)
1
ancient history(expression, adjective, late, old, past)
1
before(adverb, back, ago, elsewhere, precendently)
1
behind one(expression, adjective, late, old, past)
1
bygone(adjective, late, old, past, previous)
1
bypast(adjective, late, old, past, previous)
1
down memory lane(expression, adjective, idiom, late, old)
1
earlier(adjective, late, old, past, previous)
1
erstwhile(adjective, late, old, past, previous)
1
ex-(adjective, late, old, past, previous)
1
foregoing(adjective, late, old, past, previous)
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APASmart Define. (2015). ages ago thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/ages_ago/thesaurus/synonyms
ChicagoSmart Define. 2015. "ages ago thesaurus" https://smartdefine.org/ages_ago/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, ages ago thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/ages_ago/thesaurus/synonyms>.
MLASmart Define. "ages ago thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/ages_ago/thesaurus/synonyms>