5
evidential(characteristic, telling, ominous, revealing, suggestive)
5
exciting(adjective, importance, valuable, main, notable)
5
good(adjective, comfort, rich, well, convenient)
5
heavy(adjective, great, tough, severe, big)
5
high(adjective, important, rank, post, prominent)
5
instrumental(adjective, strong, important, powerful, useful)
5
main(adjective, good, superior, unusual, important)
5
newsworthy(adjective, importance, important, valuable, main)
5
pointed(adjective, clear, open, severe, sharp)
5
prestigious
5
pronounced(adjective, clear, energetic, substantial, definite)
5
sententious(adjective, sharp, meaning, articulate, touching)
5
singular(adjective, solid, extraordinary, superior, unusual)
5
valuable(adjective, good, big, important, substantial)
4
basic(adjective, important, original, essential, critical)
4
biggish(adjective, comfort, rich, well, convenient)
4
bountiful(adjective, substantial, large)
4
communicative(adjective, open, sensitive, animated, meaningful)
4
definitive(adjective, meaningful)
4
denotational(adjective, meaningful)
10 years ago|34k views|share |citing 
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>