Synonyms|1.3kAntonyms|350|Broader|9Narrower|12Related|1.5k

121 entries under vital topic. ×

1
of moment(expression, big, important, substantial, valuable)
1
of note(expression, big, substantial, valuable)
1
of substance(expression, big, substantial, valuable)
1
original(adjective, important, essential, basic)
1
perilous(adjective, heavy, serious, acute)
1
ponderous(big, heavy, substantial, valuable)
1
prerequisite(adjective, important, essential, critical, basic)
1
primitive(adjective, important, original, essential, basic)
1
primordial(adjective, important, original, essential, basic)
1
required(adjective, important, essential, critical, basic)
1
requisite(adjective, important, original, essential, critical)
1
rudimentary(adjective, important, original, essential, basic)
1
standout(big, outstanding, substantial, valuable)
1
structural(important, original, basic, major)
1
substratal(adjective, important, original, essential, basic)
1
substrative(adjective, important, original, essential, basic)
1
supporting(adjective, important, original, essential, basic)
1
sustaining(adjective, important, original, essential, basic)
1
theoretical(adjective, important, original, essential, basic)
1
ugly(adjective, tough, severe, heavy, important)
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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>