- Definitions|2
- Thesaurus|1k
- Abbreviations|0
| extraordinaire | |
| flaky(thoughtless, impetuous, unwary) | |
| fluky(chance, unplanned, unpremeditated) | |
| fly-by-night(spontaneous, unplanned, unpremeditated) | |
| foolhardy | |
| haste | |
| hint | |
| hit-or-miss(spontaneous, unplanned, unpremeditated) | |
| improvisate | |
| improvisational | |
| imprudent(thoughtless, impetuous, unwary) | |
| incidental(chance, unplanned, unpremeditated) | |
| infrequent(chance, unplanned, unpremeditated) | |
| instant | |
| intuitive(thoughtless, impetuous, unwary) | |
| irregular(chance, unplanned, unpremeditated) | |
| irresponsible(thoughtless, impetuous, unwary) | |
| last-minute | |
| lib | |
| mite |
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| APA | Smart Define. (2015). extemporaneous thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/extemporaneous/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "extemporaneous thesaurus" https://smartdefine.org/extemporaneous/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2015, extemporaneous thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/extemporaneous/thesaurus/synonyms>. |
| MLA | Smart Define. "extemporaneous thesaurus" 13 April 2015. Web. 29 September 2026. <https://smartdefine.org/extemporaneous/thesaurus/synonyms> |