121 entries under adjective topic. ×
| experimental(fresh, trial, first, early) | |
| forerunning | |
| governing(important, prominent, principal, foremost) | |
| greatest(important, opening, original, prominent) | |
| model | |
| noted(important, prominent, principal, foremost) | |
| outstanding(important, opening, original, prominent) | |
| pilot(opening, trial, first) | |
| popular(important, prominent, principal, foremost) | |
| premonitory | |
| primeval orprimaeval | |
| prominent(important, principal, foremost) | |
| ruling(important, opening, original, prominent) | |
| seminal | |
| stellar(important, prominent, principal, foremost) | |
| superior(important, prominent, principal, foremost) | |
| test(opening, trial, first) | |
| top(important, prominent, prime, chief) | |
| top tier(famous, best, main, dominant) | |
| trial(opening, first) |
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| APA | Smart Define. (2015). initial thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/initial/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "initial thesaurus" https://smartdefine.org/initial/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, initial thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/initial/thesaurus/synonyms>. |
| MLA | Smart Define. "initial thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/initial/thesaurus/synonyms> |