79 entries under natural topic. ×
| off-the-cuff(adjective, simple, informal, straightforward) | |
| unpaid(adjective, feature, characteristic, free, deliberate) | |
| deliberate(adjective, feature, characteristic, free) | |
| effortless(adjective, calm, quiet, light, smooth) | |
| forthright(adjective, calm, quiet, open, light) | |
| honest(adjective, weak, careless, straightforward) | |
| ingenuous(simple, honest, pure, fresh) | |
| straightforward(adjective, open, light, simple, easy) | |
| folksy(adjective, open, simple, easy, modest) | |
| guileless(simple, honest, pure, straightforward) | |
| homey(adjective, open, simple, easy, modest) | |
| opted(adjective, free, deliberate, willing) | |
| plain(simple, honest, straightforward, innocent) | |
| sincere(simple, honest, plain, straightforward) | |
| unprescribed(adjective, free, deliberate, willing) | |
| unschooled(simple, easy, honest, innocent) | |
| up front(expression, adjective, honest, impulsive) | |
| wished(adjective, free, deliberate, willing) | |
| witting(adjective, free, deliberate, willing) |
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| APA | Smart Define. (2015). spontaneous thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/spontaneous/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "spontaneous thesaurus" https://smartdefine.org/spontaneous/thesaurus/synonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2015, spontaneous thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/spontaneous/thesaurus/synonyms>. |
| MLA | Smart Define. "spontaneous thesaurus" 3 August 2015. Web. 30 September 2026. <https://smartdefine.org/spontaneous/thesaurus/synonyms> |