13
past(noun, time, past, antiquity, experiences)
10
history(noun, old, past, experiences, foretime)
9
yore(noun, time, past)
8
yesterday(noun, time, past, history, antiquity)
7
past times(noun, expression, idiom)
4
antecedent(noun, old, past, foretime)
3
bygone days(noun, expression, idiom, time)
3
days gone by(noun, verb, expression, idiom, phrasal verb)
2
bygone(noun, old, past, foretime)
2
ago
2
antiquity(past, history, experiences)
2
background(noun, old, past, foretime)
2
biography(noun, old, past, foretime)
2
bygone times(expression, past, antiquity, experiences)
2
days of yore(expression, idiom, past, antiquity)
2
former times(expression, idiom)
2
times past(expression, past, history, antiquity)
1
old
1
erewhile
1
erstwhile
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APASmart Define. (2015). yesteryear thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/yesteryear/thesaurus/synonyms
ChicagoSmart Define. 2015. "yesteryear thesaurus" https://smartdefine.org/yesteryear/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, yesteryear thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/yesteryear/thesaurus/synonyms>.
MLASmart Define. "yesteryear thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/yesteryear/thesaurus/synonyms>