55 entries under impromptu topic. ×
| extempore(adjective, adverb, free, casual, spontaneous) | |
| extemporaneous(adjective, adverb, impulsive, spontaneous, unprepared) | |
| unprepared(adjective, free, informal, casual, snap) | |
| extemporary(adjective, free, casual, spontaneous, unprepared) | |
| by ear(expression, adjective, free, informal, casual) | |
| extemporaneously(adverb, spontaneously, improv) | |
| improviso(adjective, free, informal, mock, casual) | |
| spontaneously(adverb, improv, extemporaneously) | |
| spur-of-the-moment(adjective, free, informal, casual, snap) | |
| ad hoc(expression, adjective, free, informal, casual) | |
| fake(verb, adjective, spontaneous, unprepared) | |
| improv(verb, adjective, adverb, free, informal) | |
| toss off(verb, expression, adjective, spontaneous, unprepared) | |
| toss out(expression, adjective, spontaneous, unprepared) | |
| tossed off(expression, adjective, free, create, informal) | |
| cooked-up(mock, affected) | |
| improvisatory(adjective, free, informal, casual, snap) | |
| on-the-spot(adjective, free, informal, casual, snap) | |
| on impulse(expression, adjective, free, informal, casual) | |
| spur of the moment(expression, adjective, idiom, adverb, mock) |
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| APA | Smart Define. (2015). ad lib thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/ad_lib/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "ad lib thesaurus" https://smartdefine.org/ad_lib/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, ad lib thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/ad_lib/thesaurus/synonyms>. |
| MLA | Smart Define. "ad lib thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/ad_lib/thesaurus/synonyms> |