238 entries under significant topic. ×

1
eventful(important, outstanding, remarkable, notable)
1
exceptional(adjective, big, unusual, important)
1
exigent(big, substantial, valuable, vital)
1
extensive(big, substantial, large, valuable)
1
extraordinary(adjective, unusual, important, exceptional)
1
forceful(sharp, important, powerful, stirring)
1
foremost(vital, imperative)
1
formidable(adjective, tough, severe, important)
1
front-page(big, substantial, valuable, vital)
1
goodly(substantial, large, considerable)
1
heavyweight(great, big, heavy, important)
1
importunate(big, substantial, valuable, vital)
1
informative
1
laborious(adjective, tough, severe, important)
1
life-or-death(adjective, important, essential, critical)
1
marked(big, substantial, large, valuable)
1
massive(big, heavy, substantial, large)
1
mattering much(expression, big, substantial, valuable)
1
meaning business(expression, adjective, tough, severe, important)
1
memorable(adjective, bright, intense, unusual, important)
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APASmart Define. (2016). meaningful thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/meaningful/thesaurus/synonyms
ChicagoSmart Define. 2016. "meaningful thesaurus" https://smartdefine.org/meaningful/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, meaningful thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/meaningful/thesaurus/synonyms>.
MLASmart Define. "meaningful thesaurus" 29 March 2016. Web. 29 September 2026. <https://smartdefine.org/meaningful/thesaurus/synonyms>