Synonyms|88Antonyms|46|Broader|0Narrower|0Related|634

42 entries under significant topic. ×

7
essential(adjective, important, serious, critical)
6
crucial(adjective, important, serious, essential)
2
needed(adjective, essential, basic, vital)
2
needful(adjective, essential, basic, vital)
2
requisite(adjective, essential, basic, vital)
2
vital(adjective, important, serious, essential)
1
binding(adjective, essential, basic, vital)
1
bottom-line(adjective, essential, basic, vital)
1
chief(adjective, essential, basic, vital)
1
compelling(adjective, essential, basic, vital)
1
compulsory(adjective, essential, basic, vital)
1
consequential(adjective, important, serious, critical)
1
de rigueur(expression, adjective, essential, basic)
1
decisive(adjective, serious, essential, basic)
1
exigent(adjective, essential, basic, vital)
1
expedient(adjective, essential, basic, vital)
1
fundamental(adjective, essential, basic, vital)
1
imperative(adjective, important, serious, essential)
1
incumbent on(expression, adjective, essential, basic)
1
indispensable(adjective, important, serious, essential)
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APASmart Define. (2015). all-important thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/all-important/thesaurus/synonyms
ChicagoSmart Define. 2015. "all-important thesaurus" https://smartdefine.org/all-important/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, all-important thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/all-important/thesaurus/synonyms>.
MLASmart Define. "all-important thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/all-important/thesaurus/synonyms>