124 entries under spontaneous topic. ×
| unartful(adjective, simple, natural, casual, impulsive) | |
| unasked for(expression, adjective, unwelcome, unwanted) | |
| unavoidable(adjective, simple, natural, casual, impulsive) | |
| unconscious(adjective, simple, natural, casual, impulsive) | |
| uncontrived(adjective, simple, natural, casual, impulsive) | |
| unconventional(adjective, simple, moderate, straightforward, casual) | |
| unfussy(adjective, simple, easy, plain, relaxed) | |
| unintentional(adjective, simple, natural, casual, impulsive) | |
| unofficial(adjective, simple, easy, plain, straightforward) | |
| unpremediated(adjective, simple, natural, casual, impulsive) | |
| unpremeditated(informal, casual, impulsive, unprepared) | |
| unprepared(casual, impulsive, impromptu, unrehearsed) | |
| unprescribed(adjective, deliberate, natural, willing, charitable) | |
| unrehearsed(casual, impulsive, unprepared, impromptu) | |
| unsophisticated(adjective, simple, natural, casual, impulsive) | |
| urbane(adjective, simple, easy, plain, straightforward) | |
| wished(adjective, deliberate, natural, willing, charitable) | |
| without ceremony(expression, adjective, simple, straightforward, casual) | |
| witting(adjective, deliberate, natural, willing, charitable) | |
| gradual |
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| APA | Smart Define. (2016). free thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/free/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "free thesaurus" https://smartdefine.org/free/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, free thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/free/thesaurus/synonyms>. |
| MLA | Smart Define. "free thesaurus" 1 March 2016. Web. 29 September 2026. <https://smartdefine.org/free/thesaurus/synonyms> |