Synonyms|189Antonyms|61|Broader|3Narrower|0Related|245
1
one time(expression, idiom)
1
original(last, past, primitive, venerable, outdated)
1
out-of-date(adjective, last, original, dead, remote)
1
outmoded(last, original, past, other, obsolete)
1
over(adjective, late, old, past, previous)
1
pioneer
1
pioneering
1
precursive
1
precursory
1
preexistent
1
prehistoric
1
prevenient
1
primordial(last, original, past, primitive, venerable)
1
pristine(last, original, past, primitive, venerable)
1
prodromal
1
relic(last, original, past, primitive, venerable)
1
remote(last, original, past, primitive, venerable)
1
retired(adjective, late, old, past, previous)
1
rusty(last, original, past, primitive, venerable)
1
stale(last, original, past, venerable, outdated)
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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>