41 entries under erstwhile topic. ×
| before(adjective, adverb, time, late, past) | |
| at one time(expression, adjective, idiom, adverb, late) | |
| sometime(expression, adjective, adverb, time, moment) | |
| earlier(adjective, adverb, time, late, old) | |
| long ago(expression, adjective, idiom, adverb, time) | |
| already(adjective, adverb, time, late, past) | |
| late(adjective, adverb, last, original, dead) | |
| former(noun, adjective, adverb, order, time) | |
| quondam(adjective, adverb, last, original, late) | |
| old(adjective, adverb, last, late, past) | |
| bygone(adjective, adverb, last, original, late) | |
| time was(expression, adjective, adverb, late, old) | |
| previous(adjective, adverb, last, late, old) | |
| some time ago(expression, idiom, adverb, late, earlier) | |
| ancient(adjective, late, old, past, previous) | |
| early(adjective, last, original, late, old) | |
| aforetime(adverb, earlier, then, precede, before) | |
| away back(expression, adjective, adverb, late, past) | |
| back when(expression, adjective, adverb, late, old) | |
| before now(expression, idiom, adverb, now, earlier) |
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| APA | Smart Define. (2016). once thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/once/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "once thesaurus" https://smartdefine.org/once/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2016, once thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/once/thesaurus/synonyms>. |
| MLA | Smart Define. "once thesaurus" 30 March 2016. Web. 20 September 2026. <https://smartdefine.org/once/thesaurus/synonyms> |