Synonyms|334Antonyms|50|Broader|1Narrower|0Related|40

42 entries under obligatory topic. ×

6
compulsory(adjective, certain, significant, near, essential)
6
indispensable(adjective, set, significant, essential, basic)
4
essential(adjective, set, significant, basic, vital)
3
requisite(adjective, significant, essential, basic, vital)
2
needful(adjective, set, significant, essential, basic)
2
required(adjective, certain, significant, essential, sure)
2
set(adjective, certain, obvious, bound, unquestionable)
1
all-important(adjective, significant, essential, basic, vital)
1
binding(adjective, certain, significant, essential, basic)
1
bottom-line(adjective, significant, essential, basic, vital)
1
chief(adjective, significant, essential, basic, vital)
1
compelling(adjective, strong, significant, essential, basic)
1
de rigueur(expression, adjective, significant, essential, basic)
1
exigent(adjective, significant, essential, basic, vital)
1
expedient(adjective, significant, essential, basic, vital)
1
fundamental(adjective, significant, essential, basic, vital)
1
imperative(adjective, set, strong, significant, essential)
1
incumbent on(expression, adjective, significant, essential, basic)
1
mandatory(adjective, set, significant, essential, basic)
1
momentous(adjective, significant, essential, basic, vital)
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ChicagoSmart Define. 2015. "unavoidable thesaurus" https://smartdefine.org/unavoidable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, unavoidable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/unavoidable/thesaurus/synonyms>.
MLASmart Define. "unavoidable thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/unavoidable/thesaurus/synonyms>