50 entries under imperative topic. ×

5
primary(adjective, body, material, big, important)
3
bottom-line(adjective, important, significant, original, essential)
3
influential(adjective, great, big, important, significant)
3
serious(adjective, big, important, significant, substantial)
2
big(adjective, great, significant, substantial, large)
2
considerable(big, significant, substantial, valuable, vital)
2
material(adjective, big, significant, substantial, valuable)
2
relevant(adjective, clear, sound, reasonable, sensible)
1
big-league(significant, vital)
1
conspicuous(significant, vital)
1
determining(big, significant, substantial, valuable, vital)
1
earnest(big, significant, substantial, valuable, vital)
1
esteemed(significant, vital)
1
extensive(big, significant, substantial, valuable, vital)
1
far-reaching(big, significant, substantial, valuable, vital)
1
front-page(big, significant, substantial, valuable, vital)
1
grave(adjective, great, big, important, significant)
1
large(big, significant, substantial, valuable, vital)
1
marked(big, significant, substantial, valuable, vital)
1
meaningful(adjective, big, important, significant, substantial)
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APASmart Define. (2015). necessary thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/necessary/thesaurus/synonyms
ChicagoSmart Define. 2015. "necessary thesaurus" https://smartdefine.org/necessary/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, necessary thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/necessary/thesaurus/synonyms>.
MLASmart Define. "necessary thesaurus" 2 November 2015. Web. 24 September 2026. <https://smartdefine.org/necessary/thesaurus/synonyms>