Synonyms|125Antonyms|37|Broader|0Narrower|1Related|35

44 entries under spur-of-the-moment topic. ×

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instinctive(impulsive, unprompted)
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involuntary(impulsive, unprompted)
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irresistible(impulsive, unprompted)
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off-the-cuff(impulsive, unprompted)
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off top of head(expression, idiom, impulsive, unprompted)
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simple(impulsive, unprompted)
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spontaneous(impulsive, unprompted)
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unartful(impulsive, unprompted)
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unavoidable(impulsive, unprompted)
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unbidden(impulsive, unprompted)
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uncompelled(impulsive, unprompted)
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unconscious(impulsive, unprompted)
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unconstrained(impulsive, unprompted)
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uncontrived(impulsive, unprompted)
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uncontrolled(impulsive, unprompted)
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unforced(impulsive, unprompted)
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unintentional(impulsive, unprompted)
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unpremediated(impulsive, unprompted)
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unrehearsed(impulsive, unprompted)
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unsophisticated(impulsive, unprompted)
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APASmart Define. (2013). unstructured thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/unstructured/thesaurus/synonyms
ChicagoSmart Define. 2013. "unstructured thesaurus" https://smartdefine.org/unstructured/thesaurus/synonyms (accessed October 2, 2026).
HarvardSmart Define 2013, unstructured thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/unstructured/thesaurus/synonyms>.
MLASmart Define. "unstructured thesaurus" 28 June 2013. Web. 2 October 2026. <https://smartdefine.org/unstructured/thesaurus/synonyms>