57 entries under required topic. ×

1
cardinal(adjective, important, significant, capital, essential)
1
chief(adjective, big, important, significant, substantial)
1
expedient(adjective, significant, essential, basic, vital)
1
incumbent on(verb, expression, adjective, phrasal verb, significant)
1
quintessential(adjective, significant, essential, basic, vital)
1
stipulated
1
unavoidable(adjective, set, strong, significant, essential)
1
wanted(adjective, important, significant, serious, capital)
0
bounden(necessary, obligatory, conclusive)
0
counted upon(expression, necessary, obligatory, conclusive)
0
elementary(adjective, significant, essential, basic, vital)
0
enforced(obligatory, compulsory, mandatory)
0
indissoluble(necessary, obligatory, conclusive)
0
name of game(expression, adjective, idiom, significant, essential)
0
prime(adjective, significant, essential, basic, vital)
0
specified(adjective, significant, essential, basic, vital)
0
unalterable(necessary, obligatory, conclusive)
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APASmart Define. (2015). imperative thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/imperative/thesaurus/synonyms
ChicagoSmart Define. 2015. "imperative thesaurus" https://smartdefine.org/imperative/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, imperative thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/imperative/thesaurus/synonyms>.
MLASmart Define. "imperative thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/imperative/thesaurus/synonyms>