- Definitions|1
- Thesaurus|101
- Abbreviations|0
| extemporaneous(adjective, unrehearsed, extemporary) | |
| casual(adjective, unrehearsed, extemporary) | |
| extemporary(adjective, unrehearsed, extemporaneous) | |
| extempore(adjective, unrehearsed, extemporary) | |
| impromptu(adjective, unrehearsed, extemporaneous, extemporary) | |
| improvised(adjective, unrehearsed, extemporary) | |
| informal(adjective, unrehearsed, extemporary) | |
| makeshift(adjective, unrehearsed, extemporary) | |
| offhand(adjective, unrehearsed, extemporary) | |
| offhanded | |
| spontaneous(adjective, unrehearsed, extemporaneous, extemporary) | |
| unplanned(adjective, unrehearsed, extemporary) | |
| unpremeditated(adjective, unrehearsed, extemporary) | |
| unprepared(adjective, unrehearsed, extemporary) | |
| unstudied(adjective, unrehearsed, extemporary) | |
| accidental | |
| ad-lib(unrehearsed, extemporaneous, extemporary) | |
| ad hoc(expression, unrehearsed, extemporary) | |
| ad lib | |
| adventitious |
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| APA | Smart Define. (2013). extemporal thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/extemporal/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "extemporal thesaurus" https://smartdefine.org/extemporal/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2013, extemporal thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/extemporal/thesaurus/synonyms>. |
| MLA | Smart Define. "extemporal thesaurus" 19 May 2013. Web. 20 September 2026. <https://smartdefine.org/extemporal/thesaurus/synonyms> |