Synonyms|1.1kAntonyms|182|Broader|18Narrower|25Related|905

103 entries under important topic. ×

2
coal and ice(noun, expression, idiom, part)
2
epoch-making
2
foremost(adjective, significant, original, essential)
2
grass-roots(adjective, original, essential, basic)
2
heavy(essential, critical, basic, key)
2
historic
2
life-or-death(essential, critical, basic, key)
2
momentous(adjective, significant, substantial, serious)
2
needed(adjective, significant, capital, essential)
2
ruling(noun, adjective, law, regulation)
2
serious
2
substratal(adjective, clear, simple, plain)
2
substrative(adjective, original, essential, basic)
2
sustaining(adjective, original, basic, primary)
1
anatomical(adjective, body, material, natural)
1
coal-and-ice(essential, critical, basic, key)
1
decisive(adjective, significant, essential, critical)
1
eternal(abstract, theoretical, abstruse, philosophical)
1
keynote(noun, adjective, law, support, regulation)
1
meaningful(substantial, serious, essential, critical)
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HarvardSmart Define 2016, fundamental thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/fundamental/thesaurus/synonyms>.
MLASmart Define. "fundamental thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/fundamental/thesaurus/synonyms>