52 entries under unplanned topic. ×
| erratic(careless, chance, casual, arbitrary) | |
| extemporized(adjective, informal, unprepared, unrehearsed) | |
| hit-or-miss(careless, casual, arbitrary, unpremeditated) | |
| incidental(careless, chance, casual, passing, arbitrary) | |
| irregular(careless, chance, casual, arbitrary) | |
| shot from the hip(expression, idiom, unprepared, unrehearsed) | |
| unarranged(adjective, unprepared, unrehearsed, unpremeditated) | |
| whipped up(expression, unprepared, unrehearsed) | |
| winged(unqualified, unprepared, unrehearsed, unsuspecting) | |
| Band-Aid | |
| according to pleasure(expression, idiom, informal, extemporize) | |
| adventitious(chance, accidental, unintended, unpremeditated) | |
| as one thinks best(expression, idiom, informal, extemporize) | |
| as one wishes(expression, idiom, informal, extemporize) | |
| at will(expression, informal, extemporize, off-the-cuff) | |
| by chance(expression, chance, unpremeditated) | |
| contingent(chance, unpremeditated) | |
| dashed off(expression, unprepared, unrehearsed) | |
| extemporize(informal, off-the-cuff, extemporise) | |
| faked(unprepared, unrehearsed) |
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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> |