Synonyms|396Antonyms|89|Broader|6Narrower|5Related|200

95 entries under past topic. ×

4
one(adjective, adverb, then, previously)
4
previous(adjective, adverb, last, late, old)
3
ages ago(expression, adjective, adverb, late, old)
3
ancient(adjective, late, old, previous)
3
early(adjective, last, original, late, old)
3
in times past(expression, adjective, idiom, adverb)
3
olden(adjective, original, late, old)
2
away back(expression, adjective, adverb, late)
2
back when(expression, adjective, adverb, late, old)
2
down memory lane(expression, adjective, idiom, late, old)
2
immemorial(last, original, primitive, venerable)
2
of old(expression, adjective, adverb, last, original)
2
of yore(expression, adjective, adverb, last, original)
2
olden days(expression, adjective, late, old)
2
once only(expression, adjective, idiom, adverb)
2
one-time(adjective, last, late, old)
2
primeval(last, original, primitive, venerable)
2
primitive(last, original, old, venerable)
2
prior(adjective, late, old, previous)
2
recent(adjective, late, old, previous)
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APASmart Define. (2016). once thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/once/thesaurus/synonyms
ChicagoSmart Define. 2016. "once thesaurus" https://smartdefine.org/once/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, once thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/once/thesaurus/synonyms>.
MLASmart Define. "once thesaurus" 30 March 2016. Web. 26 September 2026. <https://smartdefine.org/once/thesaurus/synonyms>