Synonyms|556Antonyms|233|Broader|10Narrower|7Related|1k

68 entries under significant topic. ×

1
requisite(adjective, important, original, essential)
1
structural(important, original, basic, vital)
1
substrative(important, original, basic, vital)
1
supporting(important, original, basic, vital)
1
sustaining(important, original, basic, vital)
1
theoretical(important, original, basic, vital)
1
underived(simple, important, original, basic)
0
all-important(adjective, essential, basic, vital)
0
binding(adjective, essential, basic, vital)
0
bottom line(expression, important, essential, basic)
0
compelling(adjective, essential, basic, vital)
0
compulsory(adjective, essential, basic, vital)
0
de rigueur(expression, adjective, essential, basic)
0
decisive(adjective, essential, basic, vital)
0
exigent(adjective, essential, basic, vital)
0
expedient(adjective, essential, basic, vital)
0
imperative(adjective, essential, basic, vital)
0
incumbent on(expression, adjective, essential, basic)
0
mandatory(adjective, essential, basic, vital)
0
momentous(adjective, essential, basic, vital)
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ChicagoSmart Define. 2015. "elementary thesaurus" https://smartdefine.org/elementary/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, elementary thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/elementary/thesaurus/synonyms>.
MLASmart Define. "elementary thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/elementary/thesaurus/synonyms>