34 entries under adjective topic. ×
| spontaneous(impulsive, willing) | |
| unplanned | |
| accidental(deliberate, unexpectedly) | |
| offhand(careless, careful, abrupt, extemporaneous) | |
| extemporaneous(improvised, rehearsed) | |
| eye-opening | |
| ad-lib(adverb, manner, rehearsed) | |
| impromptu(adverb, deliberate, unrehearsed, improvised) | |
| inadvertent | |
| casual(deliberate, chance, random) | |
| chance(accidental, unforeseeable) | |
| extemporary | |
| fortuitous(lucky, accidental) | |
| improvised | |
| haphazard(organization, plan) | |
| rash(reasonable, sensible, careless, impulsive) | |
| impulsive | |
| uncivilised | |
| automatic | |
| barbarian |
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| APA | Smart Define. (2016). planned thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/planned/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "planned thesaurus" https://smartdefine.org/planned/thesaurus/antonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, planned thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/planned/thesaurus/antonyms>. |
| MLA | Smart Define. "planned thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/planned/thesaurus/antonyms> |