- Definitions|1
- Thesaurus|176
- Abbreviations|0
| eager(impulsive, rash, unthinking) | |
| emotional | |
| extemporal(unrehearsed, extemporary) | |
| faked(unprepared, unplanned, unrehearsed) | |
| fervid(impulsive, rash, unthinking) | |
| fierce(impulsive, rash, unthinking) | |
| fly-by-night(spontaneous, unplanned, unpremeditated) | |
| foolhardy | |
| free spirited(expression, impulsive, unprompted) | |
| from the hip(expression, idiom, impulsive, unprompted) | |
| furious(impulsive, rash, unthinking) | |
| going off deep end(expression, idiom, impulsive, rash, unthinking) | |
| hit-or-miss(spontaneous, unplanned, unpremeditated) | |
| hotheaded(impulsive, rash, unthinking) | |
| hurried(quick, impulsive, rash, unthinking, swift) | |
| impassioned(impulsive, rash, unthinking) | |
| improvisational | |
| instant(adjective, sudden) | |
| irresistible(impulsive, unprompted) | |
| last-minute |
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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> |