191 entries under adjective topic. ×
| spontaneous(noun, free, fake, informal) | |
| unpremeditated(noun, free, chance, casual) | |
| accidental(careless, chance, casual, planned) | |
| casual(free, simple, fake, natural) | |
| unintentional(simple, natural, chance, casual) | |
| chance(careless, casual, planned, erratic) | |
| fortuitous(chance, casual, planned, erratic) | |
| random(insignificant, chance, casual, irregular) | |
| impromptu(free, simple, fake, informal) | |
| unexpected(adverb, chance, impulsive, planned) | |
| unintended(chance, planned, unknowing, unintentional) | |
| haphazard(insignificant, chance, casual, irregular) | |
| unwitting(careless, casual, planned, reckless) | |
| inadvertent(planned, unknowing, unaware, unintentional) | |
| hasty(impulsive, rash, unthinking) | |
| unprepared(free, ready, casual, unqualified) | |
| adventitious(chance, planned, haphazard, unintentional) | |
| extemporaneous(noun, simple, informal, natural) | |
| offhand(noun, free, simple, fake) | |
| undesigned(planned, unknowing, unaware, unintentional) |
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| APA | Smart Define. (2015). unplanned thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/unplanned/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unplanned thesaurus" https://smartdefine.org/unplanned/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, unplanned thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/unplanned/thesaurus/synonyms>. |
| MLA | Smart Define. "unplanned thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/unplanned/thesaurus/synonyms> |