65 entries under stupendous topic. ×

10
impressive(adjective, great, solid, extraordinary, unusual)
10
major(adjective, good, important, wonderful, exceptional)
10
noticeable(adjective, great, solid, extraordinary, unusual)
9
salient(adjective, great, solid, extraordinary, unusual)
9
special(adjective, great, excellent, extraordinary, unusual)
9
wonderful(adjective, excellent, solid, extraordinary, unusual)
7
eventful(adjective, great, extraordinary, important, lively)
7
eye-catching(adjective, extraordinary, wonderful, exceptional, outstanding)
7
leading(adjective, great, solid, important, powerful)
7
meritorious(adjective, feelings, wonderful, exceptional, marvelous)
7
phenomenal(adjective, excellent, solid, extraordinary, unusual)
7
super(adjective, great, extraordinary, big, important)
6
pronounced(adjective, great, extraordinary, unusual, wonderful)
5
chief(adjective, extraordinary, unusual, important, wonderful)
5
marvelous(adjective, excellent, extraordinary, wonderful, exceptional)
4
boss(adjective, informal, important, wonderful, exceptional)
4
preeminent(adjective, great, solid, extraordinary, unusual)
4
principal(adjective, extraordinary, unusual, important, wonderful)
4
superlative(adjective, important, wonderful, exceptional, marvelous)
4
terrific(adjective, great, important, wonderful, exceptional)
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APASmart Define. (2016). noteworthy thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/noteworthy/thesaurus/synonyms
ChicagoSmart Define. 2016. "noteworthy thesaurus" https://smartdefine.org/noteworthy/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, noteworthy thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/noteworthy/thesaurus/synonyms>.
MLASmart Define. "noteworthy thesaurus" 23 March 2016. Web. 28 September 2026. <https://smartdefine.org/noteworthy/thesaurus/synonyms>