- Definitions|1
- Thesaurus|176
- Abbreviations|0
| unbridled(impulsive, rash, unthinking) | |
| uncompelled(impulsive, unprompted) | |
| unconstrained(impulsive, unprompted) | |
| uncontrolled(impulsive, unprompted) | |
| unexpected(impulsive, rash, unthinking) | |
| unforced(impulsive, unprompted) | |
| unintended | |
| unintentional(impulsive, unprompted) | |
| unpredictable | |
| unpremediated(impulsive, unprompted) | |
| unprompted | |
| unreasoned | |
| unreflecting(impulsive, rash, unthinking) | |
| unreflective | |
| unrestrained(impulsive, rash, unthinking) | |
| unscheduled | |
| unsophisticated(impulsive, unprompted) | |
| unstructured(impulsive, unprompted) | |
| up front(expression, impulsive, unprompted) | |
| vamped(unprepared, unplanned, unrehearsed) |
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| APA | Smart Define. (2015). spur-of-the-moment thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/spur-of-the-moment/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "spur-of-the-moment thesaurus" https://smartdefine.org/spur-of-the-moment/thesaurus/synonyms (accessed October 2, 2026). |
| Harvard | Smart Define 2015, spur-of-the-moment thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/spur-of-the-moment/thesaurus/synonyms>. |
| MLA | Smart Define. "spur-of-the-moment thesaurus" 13 April 2015. Web. 2 October 2026. <https://smartdefine.org/spur-of-the-moment/thesaurus/synonyms> |