- Definitions|2
- Thesaurus|1.5k
- Abbreviations|0
63 entries under spontaneous topic. ×
| offhand(adjective, adverb, free, simple, fake) | |
| unprepared(adjective, adverb, free, ready) | |
| extemporaneous(adjective, adverb, simple, informal, natural) | |
| extempore(adjective, adverb, free, simple, fake) | |
| unrehearsed(adjective, free, impulsive, prepared) | |
| extemporary(adjective, free, casual, impulsive, prepared) | |
| improvised(adjective, free, simple, fake, informal) | |
| unpremeditated(adjective, adverb, free, impulsive, planned) | |
| unplanned(adjective, free, simple, fake, informal) | |
| ad-lib(noun, adjective, adverb, free, simple) | |
| makeshift(adjective, adverb, free, unprepared) | |
| off-the-cuff(adjective, adverb, simple, informal, natural) | |
| casual(adjective, free, simple, fake, natural) | |
| instinctive(adjective, simple, natural, casual, impulsive) | |
| spur-of-the-moment(adjective, adverb, free, prepared) | |
| unstudied(adjective, adverb, free, simple, fake) | |
| improviso(adjective, adverb, free, impulse) | |
| unconscious(adjective, simple, natural, casual, impulsive) | |
| impulsive(adjective, adverb, simple, natural, chance) | |
| automatic(adjective, free, simple, fake, natural) |
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| APA | Smart Define. (2016). impromptu thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/impromptu/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "impromptu thesaurus" https://smartdefine.org/impromptu/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, impromptu thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/impromptu/thesaurus/synonyms>. |
| MLA | Smart Define. "impromptu thesaurus" 28 January 2016. Web. 24 September 2026. <https://smartdefine.org/impromptu/thesaurus/synonyms> |