27 entries under spontaneous topic. ×
| extempore(adjective, adverb, free, casual) | |
| extemporaneous(adjective, adverb, impulsive, unprepared) | |
| unprepared(adjective, free, informal, casual, snap) | |
| extemporary(adjective, free, casual, unprepared) | |
| by ear(expression, adjective, free, informal, casual) | |
| extemporized(adjective, unprepared, unplanned, unrehearsed) | |
| improvised(adjective, adverb, free, impulsive) | |
| improviso(adjective, free, informal, mock, casual) | |
| spur-of-the-moment(adjective, free, informal, casual, snap) | |
| unarranged(adjective, unprepared, unplanned, unrehearsed) | |
| ad hoc(expression, adjective, free, informal, casual) | |
| fake(verb, adjective, unprepared, impromptu) | |
| improv(verb, adjective, adverb, free, informal) | |
| toss off(verb, expression, adjective, unprepared) | |
| toss out(expression, adjective, unprepared, impromptu) | |
| tossed off(expression, adjective, free, create, informal) | |
| casual(adjective, free, informal, unprepared) | |
| free(adjective, informal, casual, unprepared) | |
| improvisatory(adjective, free, informal, casual, snap) | |
| on-the-spot(adjective, free, informal, casual, snap) |
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| APA | Smart Define. (2015). ad lib thesaurus. Retrieved September 24, 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 24, 2026). |
| Harvard | Smart Define 2015, ad lib thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/ad_lib/thesaurus/synonyms>. |
| MLA | Smart Define. "ad lib thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/ad_lib/thesaurus/synonyms> |