| improvisatory(free, informal, casual, impulsive, snap) | |
| improviso(free, informal, casual, impulsive, snap) | |
| in duration(expression, adjective, present, new, being) | |
| in process(expression, adjective, present, new, being) | |
| inconstant | |
| informal(adjective, free, casual, impulsive, snap) | |
| instant(adjective, present, prompt, new, current) | |
| instantaneous | |
| interim | |
| jamming(free, informal, casual, impulsive, snap) | |
| jury-rigged | |
| just now(expression, adjective, present, new, being) | |
| kaleidoscopic | |
| limited | |
| little | |
| made-up(free, informal, casual, impulsive, snap) | |
| make-do | |
| meteoric | |
| minute | |
| modern(adjective, present, prompt, new, current) |
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| APA | Smart Define. (2016). ad hoc thesaurus. Retrieved September 26, 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 26, 2026). |
| Harvard | Smart Define 2016, ad hoc thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/ad_hoc/thesaurus/synonyms>. |
| MLA | Smart Define. "ad hoc thesaurus" 26 February 2016. Web. 26 September 2026. <https://smartdefine.org/ad_hoc/thesaurus/synonyms> |