- Definitions|1
- Thesaurus|773
- Abbreviations|0
| instant(adjective, irritable, tetchy, snippy) | |
| irregular(careless, chance, casual, random, haphazard) | |
| jamming(free, informal, casual, impulsive, snap) | |
| jumping the gun(expression, idiom, passionate, violent, thoughtless) | |
| mad(passionate, violent, thoughtless, abrupt, impetuous) | |
| madcap(noun, thoughtless, impetuous, unwary) | |
| mindless | |
| not firm | |
| occasional(adjective, chance, unplanned) | |
| off the top of head(expression, idiom, free, impromptu, unrehearsed) | |
| on-the-spot(free, informal, casual, impulsive, snap) | |
| on impulse(expression, free, informal, casual, unrehearsed) | |
| overhasty | |
| oversoon | |
| passionate(violent, thoughtless, impulsive, rash, unthinking) | |
| played by ear(expression, idiom, unprepared, unplanned, unrehearsed) | |
| precocious | |
| premature | |
| previous | |
| purposed |
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| APA | Smart Define. (2015). unpremeditated thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unpremeditated/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unpremeditated thesaurus" https://smartdefine.org/unpremeditated/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, unpremeditated thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unpremeditated/thesaurus/synonyms>. |
| MLA | Smart Define. "unpremeditated thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/unpremeditated/thesaurus/synonyms> |