191 entries under adjective topic. ×

1
demanded
1
difficult(hard, tough, severe, problematic)
1
earth-shaking(important, significant, serious, critical)
1
earthshaking
1
extreme(intense, last, impulsive, final)
1
first(important, significant, original, basic)
1
focal(key, chief, principal, foremost)
1
game-changing(change, potential)
1
grievous(great, tough, severe, heavy)
1
hazardous(heavy, significant, serious, vital)
1
helpful(useful, beneficial, advantageous, beneficent)
1
high-powered
1
importunate(big, important, significant, substantial)
1
intrinsic(important, significant, original, essential)
1
leading(important, serious, capital, essential)
1
memorable(important, lively, outstanding, significant)
1
nitty-gritty(important, original, essential, critical)
1
ominous(heavy, important, significant, acute)
1
operative(important, powerful, active, useful)
1
perilous(heavy, significant, serious, vital)
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APASmart Define. (2016). crucial thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/crucial/thesaurus/synonyms
ChicagoSmart Define. 2016. "crucial thesaurus" https://smartdefine.org/crucial/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, crucial thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/crucial/thesaurus/synonyms>.
MLASmart Define. "crucial thesaurus" 11 March 2016. Web. 30 September 2026. <https://smartdefine.org/crucial/thesaurus/synonyms>