92 entries under casual topic. ×
| automatic(adjective, free, fake, natural) | |
| unplanned(noun, adjective, free, fake, informal) | |
| unthinking(adjective, careless, natural, emotional) | |
| free(adjective, feature, characteristic, simple, fake) | |
| offhand(noun, adjective, free, careless) | |
| unconstrained(adjective, feature, characteristic, free, simple) | |
| extempore(adjective, free, simple, fake, informal) | |
| spur-of-the-moment(noun, adjective, free, fake, informal) | |
| informal(adjective, free, simple, plain, relaxed) | |
| unconscious(adjective, careless, impulsive, willing) | |
| easy(adjective, simple, plain, relaxed) | |
| intimate(adjective, simple, plain, straightforward) | |
| simple(adjective, open, light, easy, pure) | |
| snap(noun, adjective, light, free, simple) | |
| sudden(noun, adjective, passionate, violent, careless) | |
| unorganized(careless, arbitrary) | |
| extemporary(adjective, free, impulsive, unprepared) | |
| reckless(noun, adjective, careless, thoughtless) | |
| unconsidered(noun, careless, thoughtless, impetuous) | |
| open(adjective, calm, simple, easy, informal) |
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| APA | Smart Define. (2015). spontaneous thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/spontaneous/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "spontaneous thesaurus" https://smartdefine.org/spontaneous/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2015, spontaneous thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/spontaneous/thesaurus/synonyms>. |
| MLA | Smart Define. "spontaneous thesaurus" 3 August 2015. Web. 29 September 2026. <https://smartdefine.org/spontaneous/thesaurus/synonyms> |