- Definitions|1
- Thesaurus|126
- Abbreviations|0
| unexpected(adjective, unplanned, unintentional, accidental, unintended) | |
| unforeseen(adjective, unplanned, unintentional, accidental, unintended) | |
| unthought(adjective, unplanned, unintentional, accidental, inadvertent) | |
| erratic(adjective, unplanned, unintentional, accidental, inadvertent) | |
| purposeless(adjective, unplanned, unintentional, accidental, inadvertent) | |
| snap | |
| spontaneous(accidental, unintended) | |
| unstudied | |
| adventitious(adjective, accidental, unintended) | |
| automatic | |
| gut | |
| ill-advised | |
| ill-considered | |
| ill-devised | |
| impulsive | |
| indeliberate | |
| instinctive | |
| purposed | |
| reflex | |
| reflexive |
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| APA | Smart Define. (2015). undesigned thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/undesigned/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "undesigned thesaurus" https://smartdefine.org/undesigned/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, undesigned thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/undesigned/thesaurus/synonyms>. |
| MLA | Smart Define. "undesigned thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/undesigned/thesaurus/synonyms> |