40 entries under old topic. ×

20
former(noun, adjective, adverb, order, time)
18
quondam(adjective, last, original, dead, late)
16
previous(adjective, adverb, last, dead, late)
15
past(adjective, original, previous, former)
14
sometime(adjective, adverb, last, original, dead)
13
late(adjective, last, original, dead)
12
once(adjective, adverb, last, original, late)
12
prior(adjective, late, past, previous)
11
one-time(adjective, last, dead, late)
9
bygone(adjective, last, original, late)
9
preceding(adjective, late, past, previous)
8
earlier(adjective, adverb, late, past)
7
recent(adjective, late, past, previous)
6
olden(adjective, original, dead, late)
5
early(adjective, last, original, late)
4
foregoing(adjective, late, past, previous)
3
ancient(adjective, dead, late, past)
2
back when(expression, adverb, late, past)
2
bypast(adjective, late, past, previous)
2
down memory lane(expression, idiom, adverb, dead, late)
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APASmart Define. (2015). erstwhile thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/erstwhile/thesaurus/synonyms
ChicagoSmart Define. 2015. "erstwhile thesaurus" https://smartdefine.org/erstwhile/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, erstwhile thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/erstwhile/thesaurus/synonyms>.
MLASmart Define. "erstwhile thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/erstwhile/thesaurus/synonyms>