578 entries under adjective topic. ×

4
evident(clear, big, unusual, important)
4
informative(revealing, educational)
4
integral(importance, important, original, serious)
4
major-league(strong, great, extraordinary, unusual)
4
of import(expression, idiom)
4
operative(active, useful, running, beneficial)
4
palpable(substantial, considerable)
4
persuasive(strong, moving, powerful, touching)
4
prime(good, important, original, essential)
4
sensible(good, big, substantial, definite)
4
solid(extraordinary, proper, exceptional, substantial)
4
strong(clear, open, intense, important)
4
token(noun, feature, characteristic, information)
4
unforgettable
4
unusual(solid, extraordinary, superior, important)
3
abundant(comfort, rich, well, convenient)
3
awakening(moving, touching, exciting, stirring)
3
awe-inspiring(moving, unusual, strange, exceptional)
3
beneficial(friendly, sympathetic, useful, valuable)
3
big-time
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APASmart Define. (2016). significant thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/significant/thesaurus/synonyms
ChicagoSmart Define. 2016. "significant thesaurus" https://smartdefine.org/significant/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, significant thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/significant/thesaurus/synonyms>.
MLASmart Define. "significant thesaurus" 4 March 2016. Web. 24 September 2026. <https://smartdefine.org/significant/thesaurus/synonyms>