Synonyms|161Antonyms|2|Broader|0Narrower|0Related|16

37 entries under significant topic. ×

6
mandatory(adjective, right, essential, basic)
6
obligatory(adjective, right, essential, basic)
5
required(adjective, right, essential, basic)
2
binding(adjective, essential, basic, vital)
2
compulsory(adjective, essential, basic, vital)
2
imperative(adjective, essential, basic, vital)
2
requisite(adjective, essential, basic, vital)
1
all-important(adjective, essential, basic, vital)
1
bottom-line(adjective, essential, basic, vital)
1
chief(adjective, essential, basic, vital)
1
compelling(adjective, essential, basic, vital)
1
exigent(adjective, essential, basic, vital)
1
expedient(adjective, essential, basic, vital)
1
fundamental(adjective, essential, basic, vital)
1
incumbent on(expression, adjective, essential, basic)
1
momentous(adjective, essential, basic, vital)
1
name of game(expression, adjective, idiom, essential)
1
needed(adjective, essential, basic, vital)
1
needful(adjective, essential, basic, vital)
1
prerequisite(adjective, essential, basic, vital)
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ChicagoSmart Define. 2015. "de rigueur thesaurus" https://smartdefine.org/de_rigueur/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, de rigueur thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/de_rigueur/thesaurus/synonyms>.
MLASmart Define. "de rigueur thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/de_rigueur/thesaurus/synonyms>