| progressive(adjective, modern, pioneering, trailblazing) | |
| unconcluded(adjective, fresh, trial, untried) | |
| first stage(expression, adjective, fresh, trial) | |
| latest | |
| novel | |
| on approval(expression, adjective, fresh, trial) | |
| radical(modern, pioneering, trailblazing, secretive) | |
| under probation(expression, adjective, fresh, trial) | |
| up-to-the-minute | |
| additional(extra, auxiliary, supernumerary) | |
| beat(modern, pioneering, trailblazing, cutting-edge) | |
| extra(auxiliary, supernumerary) | |
| forward-looking(modern, pioneering, trailblazing, cutting-edge) | |
| head(modern, first, early, pioneering) | |
| hip(modern, pioneering, trailblazing, cutting-edge) | |
| investigational(adjective, trial, untried) | |
| later | |
| lead(modern, first, early, pioneering) | |
| leading-edge(modern, pioneering, trailblazing, cutting-edge) | |
| liberal(modern, pioneering, trailblazing, cutting-edge) |
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| APA | Smart Define. (2015). experimental thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/experimental/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "experimental thesaurus" https://smartdefine.org/experimental/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, experimental thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/experimental/thesaurus/synonyms>. |
| MLA | Smart Define. "experimental thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/experimental/thesaurus/synonyms> |