337 entries under adjective topic. ×

4
critical(great, big, important, substantial)
4
crowning(top, excellent, fine, superior)
4
iconic
4
maximum(top, excellent, fine, superior)
4
noteworthy(extraordinary, unusual, important, wonderful)
4
overruling(importance, serious, essential, basic)
4
predominate(free, top, superior, prime)
4
preponderant(free, top, extraordinary, superior)
4
rudimentary(important, significant, original, essential)
4
salient(big, important, wonderful, exceptional)
4
transcendent(bad, tough, top, perfect)
4
undefeated(excellent, super, best, unbeaten)
3
banner(lead, head, master, boss)
3
big-league(lead, head, master, boss)
3
conspicuous(great, big, wonderful, exceptional)
3
constitutional(body, material, important, significant)
3
dominating(important, prominent, prime, chief)
3
excellent(bad, great, fine, superior)
3
first key
3
front(order, heavy, head, opening)
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APASmart Define. (2016). principal thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/principal/thesaurus/synonyms
ChicagoSmart Define. 2016. "principal thesaurus" https://smartdefine.org/principal/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, principal thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/principal/thesaurus/synonyms>.
MLASmart Define. "principal thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/principal/thesaurus/synonyms>