20 entries under spontaneous topic. ×
| Band-Aid(adjective, present, short, limited, brief) | |
| fly-by-night(adjective, unplanned, unpremeditated) | |
| ad lib(expression, adjective, free, informal, casual) | |
| immediate(adjective, present, free, fake, informal) | |
| spur-of-the-moment(adjective, free, fake, informal, casual) | |
| unprepared(adjective, free, fake, informal, casual) | |
| ad-lib(adjective, free, fake, informal, casual) | |
| autoschediastic(free, casual, impulsive, unprepared) | |
| extemporaneous(adjective, free, informal, casual, impulsive) | |
| extemporary(free, casual, impulsive, unprepared) | |
| fake(free, casual, impulsive, unprepared) | |
| free(informal, casual, impulsive, unprepared) | |
| off-the-cuff(adjective, informal, unprepared, impromptu) | |
| toss off(expression, free, casual, impulsive) | |
| toss out(expression, free, casual, impulsive) | |
| extemporized(adjective, informal, unprepared, unplanned) | |
| hit-or-miss(unplanned, unpremeditated) | |
| impulsive(unprepared, unplanned) | |
| unarranged(unprepared, unplanned, unrehearsed, unpremeditated) | |
| unscripted(unprepared, impromptu, unplanned, unrehearsed) |
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| APA | Smart Define. (2016). ad hoc thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/ad_hoc/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "ad hoc thesaurus" https://smartdefine.org/ad_hoc/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, ad hoc thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/ad_hoc/thesaurus/synonyms>. |
| MLA | Smart Define. "ad hoc thesaurus" 26 February 2016. Web. 28 September 2026. <https://smartdefine.org/ad_hoc/thesaurus/synonyms> |