112 entries under significant topic. ×

5
super(adjective, great, important, substantial)
4
astronomical(substantial, large, huge, immense)
4
noteworthy(important, substantial, large)
3
much(substantial, large)
3
paramount(adjective, important, vital, main)
3
popular(adjective, good, important, famous)
3
solid(adjective, person, body, strong, sound)
3
sound(adjective, strong, tough, solid, heavy)
3
chief(substantial, valuable, vital, main)
3
fab(important, substantial, large)
3
major-league(large, considerable)
3
plentiful(adjective, great, complete, substantial)
3
primary(important, substantial, large, serious)
3
salient(substantial, valuable, vital, imperative)
3
valuable(adjective, good, strong, great, important)
3
well-built(adjective, person, body, strong, sound)
2
appreciable(adjective, substantial, large)
2
conspicuous(important, famous, familiar, affected)
2
crucial(heavy, important, substantial, valuable)
2
distinguished(adjective, important, famous, familiar)
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APASmart Define. (2016). big thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/big/thesaurus/synonyms
ChicagoSmart Define. 2016. "big thesaurus" https://smartdefine.org/big/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, big thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/big/thesaurus/synonyms>.
MLASmart Define. "big thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/big/thesaurus/synonyms>