Synonyms|363Antonyms|90|Broader|9Narrower|7Related|1k

46 entries under unplanned topic. ×

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irregular(chance, unpremeditated)
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occasional(chance, unpremeditated)
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odd(chance, unpremeditated)
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serendipitous(chance, unpremeditated)
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uncertain(chance, unpremeditated)
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unintended(chance, accidental, unpremeditated)
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APASmart Define. (2016). impromptu thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/impromptu/thesaurus/synonyms
ChicagoSmart Define. 2016. "impromptu thesaurus" https://smartdefine.org/impromptu/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, impromptu thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/impromptu/thesaurus/synonyms>.
MLASmart Define. "impromptu thesaurus" 28 January 2016. Web. 27 September 2026. <https://smartdefine.org/impromptu/thesaurus/synonyms>