7
inspirational(adjective, moving, touching, exciting, stirring)
7
knowing(adjective, meaning, expressive, meaningful, telling)
7
large(adjective, strong, big, important, substantial)
7
leading(adjective, good, important, powerful, rank)
7
monumental(adjective, important, impressive, overwhelming)
7
pressing(verb, adjective, tough, severe, big)
7
representative(adjective, open, sensitive, animated, meaningful)
7
rich(adjective, strong, sound, intense, comfort)
7
substantive(adjective, substantial)
6
cardinal(adjective, important, original, essential, critical)
6
cogent(adjective, sharp, energetic, short, compact)
6
convincing(adjective, meaning, key, forceful, meaningful)
6
distinguished(adjective, extraordinary, superior, big, unusual)
6
eventful(adjective, important, lively, outstanding, prominent)
6
exceptional(adjective, solid, extraordinary, superior, big)
6
fundamental(adjective, important, original, essential, critical)
6
marked(adjective, clear, solid, extraordinary, superior)
6
necessary(adjective, big, important, original, substantial)
6
pithy(adjective, point, brief, imagination)
6
primary(adjective, superior, big, unusual, important)
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APASmart Define. (2016). significant thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/significant/thesaurus/synonyms
ChicagoSmart Define. 2016. "significant thesaurus" https://smartdefine.org/significant/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, significant thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/significant/thesaurus/synonyms>.
MLASmart Define. "significant thesaurus" 4 March 2016. Web. 21 September 2026. <https://smartdefine.org/significant/thesaurus/synonyms>