81 entries under significant topic. ×

1
substratal(adjective, important, original, essential)
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(important, original, basic, vital)
1
urgent(adjective, important, essential, critical)
1
wanted(adjective, important, capital, essential)
0
all-important(adjective, essential, basic, vital)
0
binding(adjective, essential, basic, vital)
0
bottom line(expression, important, essential, basic)
0
de rigueur(expression, adjective, essential, basic)
0
exigent(adjective, essential, basic, vital)
0
expedient(adjective, essential, basic, vital)
0
incumbent on(expression, adjective, essential, basic)
0
meat and potatoes(expression, idiom, important, vital)
0
name of game(expression, adjective, idiom, essential)
0
obligatory(adjective, essential, basic, vital)
0
pressing(adjective, essential, basic, vital)
0
specified(adjective, essential, basic, vital)
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APASmart Define. (2015). cardinal thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/cardinal/thesaurus/synonyms
ChicagoSmart Define. 2015. "cardinal thesaurus" https://smartdefine.org/cardinal/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, cardinal thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/cardinal/thesaurus/synonyms>.
MLASmart Define. "cardinal thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/cardinal/thesaurus/synonyms>