- Definitions|1
- Thesaurus|773
- Abbreviations|0
33 entries under spontaneous topic. ×
| impulsive(noun, adjective, rude, careless, natural) | |
| extemporaneous(noun, adjective, impulsive, planned, impulse) | |
| impromptu(adjective, adverb, free, impulsive, planned) | |
| offhand(noun, adjective, free, careless, casual) | |
| extempore(adjective, free, planned, impromptu) | |
| instinctive(noun, adjective, rude, passionate, violent) | |
| automatic(adjective, free, casual, planned) | |
| unprepared(adjective, free, impromptu, unplanned) | |
| unstudied(adjective, free, casual, impromptu) | |
| spur-of-the-moment(noun, adjective, free, impulsive) | |
| unconscious(adjective, careless, natural, casual, thoughtless) | |
| improvised(adjective, free, casual, impulsive, impulse) | |
| extemporary(adjective, free, casual, impulsive) | |
| unrehearsed(adjective, free, impulsive, unprepared) | |
| ad-lib(adjective, unprepared, impromptu, unplanned) | |
| extemporized(adjective, unprepared, unplanned, unrehearsed) | |
| headlong(noun, adjective, passionate, violent, thoughtless) | |
| hit-or-miss(adjective, careless, chance, casual) | |
| unarranged(adjective, unprepared, unplanned, unrehearsed) | |
| improv(free, informal, casual, unprepared) |
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| APA | Smart Define. (2015). unpremeditated thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/unpremeditated/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unpremeditated thesaurus" https://smartdefine.org/unpremeditated/thesaurus/synonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2015, unpremeditated thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/unpremeditated/thesaurus/synonyms>. |
| MLA | Smart Define. "unpremeditated thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/unpremeditated/thesaurus/synonyms> |