142 entries under simple topic. ×
| off-the-cuff(adjective, informal, natural, straightforward) | |
| uncontrived(adjective, easy, real, impulsive) | |
| unrestrained(adjective, calm, plain, relaxed) | |
| artless(adjective, easy, honest, pure) | |
| effortless(adjective, calm, quiet, light, smooth) | |
| forthright(adjective, calm, quiet, open, light) | |
| improv(adjective, free, fake, informal) | |
| ingenuous(honest, pure, natural, fresh) | |
| jejune(plain, fresh, innocent, sincere) | |
| laid-back(adjective, easy, plain, informal) | |
| loose(adjective, easy, plain, careless) | |
| ordinary(adjective, reasonable, common, usual) | |
| original(plain, fresh, innocent, sincere) | |
| relaxed(adjective, calm, quiet, light, smooth) | |
| straightforward(adjective, open, light, easy) | |
| aboveboard(plain, fresh, innocent, sincere) | |
| at ease(expression, adjective, calm, quiet, light) | |
| being oneself(expression, easy, real, unaffected) | |
| callow(plain, fresh, innocent, sincere) | |
| calm(adjective, quiet, light, smooth) |
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| APA | Smart Define. (2015). spontaneous thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/spontaneous/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "spontaneous thesaurus" https://smartdefine.org/spontaneous/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, spontaneous thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/spontaneous/thesaurus/synonyms>. |
| MLA | Smart Define. "spontaneous thesaurus" 3 August 2015. Web. 24 September 2026. <https://smartdefine.org/spontaneous/thesaurus/synonyms> |