57 entries under required topic. ×

6
needed(adjective, set, important, significant, essential)
5
inevitable(adjective, strong, overwhelming, obligatory)
5
decisive(adjective, big, important, significant, substantial)
5
proviso(noun, adjective, form, fix, pass)
4
basic(noun, adjective, important, significant, essential)
4
constraining(adjective, obligatory)
3
inescapable(adjective, necessary)
3
inexorable(adjective, strong, severity, overwhelming)
3
involuntary
3
momentous(adjective, big, important, determined, significant)
2
coercive(severity, dominant, oppressive, persuasive, convincing)
2
compulsatory(commanding, obligatory, authoritative, domineering)
2
conclusive(key, necessary, obligatory, pivotal)
2
de rigueur(expression, adjective, significant, essential, basic)
2
irrevocable(necessary, obligatory, conclusive)
2
paramount(adjective, big, important, significant, substantial)
2
principal(adjective, big, important, significant, substantial)
2
significant(adjective, big, important, determined, substantial)
1
all-important(adjective, important, significant, serious, essential)
1
bottom-line(adjective, important, significant, essential, critical)
11 years ago|15k views|share |citing 
APASmart Define. (2015). imperative thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/imperative/thesaurus/synonyms
ChicagoSmart Define. 2015. "imperative thesaurus" https://smartdefine.org/imperative/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, imperative thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/imperative/thesaurus/synonyms>.
MLASmart Define. "imperative thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/imperative/thesaurus/synonyms>