92 entries under casual topic. ×
| frank(adjective, open, simple, easy, careless) | |
| off-the-cuff(adjective, simple, informal, natural, straightforward) | |
| unrestrained(adjective, calm, simple, plain, relaxed) | |
| arbitrary | |
| improv(adjective, free, simple, fake, informal) | |
| improvisatory(free, informal, impulsive, impulse) | |
| improviso(free, informal, unprepared, unplanned) | |
| loose(adjective, simple, easy, plain, careless) | |
| ordinary(adjective, simple, reasonable, common, usual) | |
| random(careless, chance, arbitrary, unplanned) | |
| relaxed(adjective, calm, quiet, light, smooth) | |
| straightforward(adjective, open, light, simple, easy) | |
| accidental(adjective, careless, chance, erratic) | |
| ad hoc(expression, free, unplanned, unrehearsed) | |
| autoschediastic(free, impulsive, unprepared, impromptu) | |
| by ear(expression, free, informal, unrehearsed) | |
| careless(thoughtless, impetuous, arbitrary, unwary) | |
| chance(careless, arbitrary, unplanned, accidental) | |
| colloquial(adjective, simple, easy, plain, straightforward) | |
| congenial(adjective, simple, easy, friendly, plain) |
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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> |