239 entries under important topic. ×

2
carrying a lot of weight(expression, adjective, idiom, critical)
2
deep(adjective, good, strong, tough, severe)
2
epochal
2
famous(adjective, strong, extraordinary, powerful)
2
far-reaching(adjective, severe, big, substantial)
2
full(adjective, lively, exciting, busy)
2
germane(adjective, substantial, serious, applicable)
2
grievous(adjective, great, tough, severe, heavy)
2
heavyweight(great, big, heavy, substantial)
2
high-ranking(adjective, rank, post, prominent)
2
huge(adjective, substantial, large, extensive)
2
imperative(adjective, big, determined, substantial)
2
importunate(adjective, great, big, substantial)
2
indispensable(adjective, original, serious, essential)
2
life-and-death(adjective, heavy, critical, vital)
2
mean(verb, adjective, essential, basic)
2
mind-blowing(adjective, moving, unusual, exceptional)
2
name(strong, powerful, essential, critical)
2
paramount(adjective, good, original, serious)
2
proper(adjective, good, appropriate, sensible, fair)
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APASmart Define. (2016). significant thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/significant/thesaurus/synonyms
ChicagoSmart Define. 2016. "significant thesaurus" https://smartdefine.org/significant/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, significant thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/significant/thesaurus/synonyms>.
MLASmart Define. "significant thesaurus" 4 March 2016. Web. 23 September 2026. <https://smartdefine.org/significant/thesaurus/synonyms>