| old-time(adjective, last, original, odd, old) | |
| old times(noun, expression, idiom) | |
| past times(noun, expression, idiom) | |
| since(adverb, preposition, conjunction, because) | |
| then | |
| time(noun, period, length) | |
| vanished(split, away, lacking, finished, absent) | |
| ancient history(expression, adjective, idiom, old, finished) | |
| away(adjective, adverb, split, quit, lost) | |
| bygone days(noun, expression, idiom, time) | |
| career | |
| completed(adjective, finished, up, preceding, done) | |
| dated(adjective, last, original, odd, old) | |
| days of old(noun, expression, idiom, antiquity, experiences) | |
| disused | |
| experiences(noun, practice, antiquity) | |
| foregone | |
| foretime | |
| formerly | |
| good old days(noun, expression, adjective, idiom, old) |
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| APA | Smart Define. (2015). past thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/past/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "past thesaurus" https://smartdefine.org/past/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, past thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/past/thesaurus/synonyms>. |
| MLA | Smart Define. "past thesaurus" 25 May 2015. Web. 24 September 2026. <https://smartdefine.org/past/thesaurus/synonyms> |