- Definitions|1
- Thesaurus|176
- Abbreviations|0
| madcap | |
| off the hip(expression, idiom, impromptu, extemporaneous) | |
| off top of head(expression, idiom, informal, impulsive, snap) | |
| out of the blue(expression, idiom, unprepared) | |
| passionate(impulsive, rash, unthinking) | |
| precipitant(quick, impulsive, rash, unthinking, swift) | |
| precipitous(quick, impulsive, rash, unthinking, swift) | |
| prepared | |
| random | |
| restive(impulsive, rash, unthinking) | |
| rushing(quick, impulsive, rash, unthinking, swift) | |
| simple(impulsive, unprompted) | |
| subitaneous(quick, impulsive, rash, unthinking, swift) | |
| swift(quick, impulsive, rash, unthinking, rushed) | |
| throwaway(impromptu, extemporaneous) | |
| thrown off(expression, unprepared, unplanned, unrehearsed) | |
| unannounced | |
| unartful(impulsive, unprompted) | |
| unavoidable(impulsive, unprompted) | |
| unbidden(impulsive, unprompted) |
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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> |