Synonyms|254Antonyms|75|Broader|10Narrower|4Related|423
2
basic(adjective, significant, essential, vital, fundamental)
2
bounden(necessary, required, obligatory, conclusive)
2
coercive(affected, strained, unnatural, required, compulsory)
2
compulsorily
2
conclusive(set, strict, necessary, required, obligatory)
2
decisive(adjective, set, significant, essential, basic)
2
dominion
2
irrevocable(set, strict, necessary, required, obligatory)
2
necessitous(essential, necessary, required, needed)
2
power(strong, energetic, active, vigorous, controlling)
2
province
2
regulation
2
sine qua non(expression, idiom)
2
standard
2
territory
1
inexorable(adjective, obvious, required, inevitable, inescapable)
1
absolute
1
accepted
1
all-important(adjective, significant, essential, basic, vital)
1
ally
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ChicagoSmart Define. 2015. "mandatory thesaurus" https://smartdefine.org/mandatory/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, mandatory thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/mandatory/thesaurus/synonyms>.
MLASmart Define. "mandatory thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/mandatory/thesaurus/synonyms>