121 entries under vital topic. ×

4
basic(adjective, important, original, essential, critical)
4
integral(adjective, importance, important, original, serious)
4
prime(adjective, good, important, original, essential)
3
burning(adjective, important)
3
extensive(adjective, big, substantial, large, valuable)
3
first(adjective, superior, unusual, important, rank)
2
deep(adjective, good, strong, tough, severe)
2
grievous(adjective, great, tough, severe, heavy)
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, critical)
2
paramount(adjective, good, important, original, serious)
2
radical(adjective, great, important, original, serious)
1
acute(adjective, severe, sharp, heavy, important)
1
all-important(adjective, important, serious, essential, critical)
1
axiological(adjective, important, original, essential, basic)
1
axiomatic(important, original, basic, major)
1
basal(adjective, important, original, essential, basic)
1
bottom(adjective, important, original, essential, basic)
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APASmart Define. (2016). significant thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/significant/thesaurus/synonyms
ChicagoSmart Define. 2016. "significant thesaurus" https://smartdefine.org/significant/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, significant thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/significant/thesaurus/synonyms>.
MLASmart Define. "significant thesaurus" 4 March 2016. Web. 28 September 2026. <https://smartdefine.org/significant/thesaurus/synonyms>