3
compelling(adjective, important, significant, serious, essential)
3
entailed
3
fundamental(adjective, important, significant, capital, essential)
3
imperious(adjective, commanding, obligatory, authoritative, domineering)
3
imposed
3
lacked(verb, lacked)
3
mandated
3
perfect(adjective, correct, flawless, faultless, textbook)
3
requested
3
standard
3
staple
3
stipulated(verb, adjective)
2
require
2
absolute(flawless, faultless, textbook)
2
bounden(necessary, obligatory, conclusive)
2
called-for
2
cardinal(adjective, important, significant, capital, essential)
2
carried
2
central
2
certain(correct, proper, suitable, flawless, obvious)
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APASmart Define. (2015). required thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/required/thesaurus/synonyms
ChicagoSmart Define. 2015. "required thesaurus" https://smartdefine.org/required/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, required thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/required/thesaurus/synonyms>.
MLASmart Define. "required thesaurus" 3 November 2015. Web. 21 September 2026. <https://smartdefine.org/required/thesaurus/synonyms>