| unprepared(adjective, informal, impulsive, spontaneous, unexpected) | |
| unrehearsed(adjective, adverb, informal, unplanned, extemporize) | |
| without restraint(expression, adjective, adverb, informal, unplanned) | |
| abundance | |
| ad hoc(expression, adjective, informal, unplanned, spur-of-the-moment) | |
| amply | |
| automatically(spontaneously, improv, extemporaneously) | |
| by ear(expression, spontaneously, improv, extemporaneously) | |
| content | |
| discretion | |
| extemporaneously(spontaneously, improv) | |
| extempore(informal, unplanned, extemporize, off-the-cuff, extemporise) | |
| extemporize(informal, unplanned, off-the-cuff, extemporise) | |
| extemporized(informal, unplanned, extemporize, off-the-cuff, extemporise) | |
| full | |
| improv(spontaneously, extemporaneously) | |
| improvise(informal, unplanned, extemporize, off-the-cuff, extemporise) | |
| informal(unplanned, off-the-cuff) | |
| off the cuff(expression, idiom, spontaneously, improv, extemporaneously) | |
| off the hip(expression, idiom, spontaneously, improv, extemporaneously) |
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| APA | Smart Define. (2015). ad libitum thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/ad_libitum/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "ad libitum thesaurus" https://smartdefine.org/ad_libitum/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, ad libitum thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/ad_libitum/thesaurus/synonyms>. |
| MLA | Smart Define. "ad libitum thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/ad_libitum/thesaurus/synonyms> |