85 entries under critical topic. ×

5
eminent(adjective, good, extraordinary, important, strange)
5
heavy(adjective, great, tough, severe, big)
5
main(adjective, good, superior, unusual, important)
5
valuable(adjective, good, big, important, substantial)
4
basic(adjective, important, original, essential)
4
integral(adjective, importance, important, original, serious)
3
certain(adjective, superior, energetic, unusual, exceptional)
3
earth-shaking(adjective, important, serious, historic)
2
carrying a lot of weight(expression, adjective, idiom, important)
2
climacteric
2
imperative(adjective, big, important, determined, substantial)
2
importunate(adjective, great, big, important, substantial)
2
indispensable(adjective, important, original, serious, essential)
2
life-and-death(adjective, heavy, important, vital)
2
name(strong, important, powerful, essential)
2
paramount(adjective, good, important, original, serious)
1
absolute(adjective, energetic, vigorous, sober, serious)
1
acute(adjective, severe, sharp, heavy, important)
1
all-important(adjective, important, serious, essential)
1
bottom-line(adjective, important, original, essential)
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APASmart Define. (2016). significant thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/significant/thesaurus/synonyms
ChicagoSmart Define. 2016. "significant thesaurus" https://smartdefine.org/significant/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, significant thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/significant/thesaurus/synonyms>.
MLASmart Define. "significant thesaurus" 4 March 2016. Web. 26 September 2026. <https://smartdefine.org/significant/thesaurus/synonyms>