33 entries under unplanned topic. ×
| impromptu(adjective, free, informal, casual) | |
| fly-by-night(adjective, spontaneous, unpremeditated) | |
| ad lib(expression, adjective, free, informal, casual) | |
| improvised(adjective, free, informal, casual, impulsive) | |
| spontaneous(adjective, free, informal, casual) | |
| spur-of-the-moment(adjective, free, fake, informal, casual) | |
| unprepared(adjective, free, fake, informal, casual) | |
| ad-lib(adjective, free, fake, informal, casual) | |
| extemporaneous(adjective, free, informal, casual, impulsive) | |
| extempore(free, informal, casual, impulsive) | |
| off-the-cuff(adjective, informal, spontaneous, unprepared, impromptu) | |
| unrehearsed(free, informal, casual, impulsive, snap) | |
| according to pleasure(expression, idiom, informal, off-the-cuff) | |
| ad libitum(expression, adjective, informal, spur-of-the-moment) | |
| as one thinks best(expression, idiom, informal, off-the-cuff) | |
| as one wishes(expression, idiom, informal, off-the-cuff) | |
| at will(expression, informal, off-the-cuff) | |
| dashed off(expression, unprepared, unrehearsed) | |
| extemporize(informal, off-the-cuff) | |
| extemporized(adjective, informal, spontaneous, unprepared) |
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| APA | Smart Define. (2016). ad hoc thesaurus. Retrieved September 29, 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 29, 2026). |
| Harvard | Smart Define 2016, ad hoc thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/ad_hoc/thesaurus/synonyms>. |
| MLA | Smart Define. "ad hoc thesaurus" 26 February 2016. Web. 29 September 2026. <https://smartdefine.org/ad_hoc/thesaurus/synonyms> |