65 entries under great topic. ×

64
crucial(adjective, severe, extraordinary, big)
49
important(adjective, severe, extraordinary, big)
48
vital(adjective, severe, big, heavy)
36
serious(adjective, hard, tough, severe)
29
grave(adjective, heavy, important, substantial)
20
dangerous(adjective, bad, severe, heavy)
19
momentous(adjective, severe, extraordinary, big)
18
significant(adjective, extraordinary, big, heavy)
15
decisive(adjective, severe, extraordinary, big)
15
weighty(adjective, hard, hurt, tough)
11
major(adjective, heavy, important, significant)
5
heavy(adjective, harsh, extraordinary, big)
5
notable(adjective, heavy, important, lively)
5
principal(adjective, big, important, substantial)
3
heavyweight(adjective, big, heavy, important)
3
meaningful(adjective, important, significant, substantial)
2
grievous(adjective, hard, tough, difficult)
2
historic(adjective, extraordinary, important, lively)
2
influential(adjective, important, significant, serious)
2
outstanding(adjective, important, lively, significant)
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APASmart Define. (2016). critical thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/critical/thesaurus/synonyms
ChicagoSmart Define. 2016. "critical thesaurus" https://smartdefine.org/critical/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, critical thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/critical/thesaurus/synonyms>.
MLASmart Define. "critical thesaurus" 16 February 2016. Web. 26 September 2026. <https://smartdefine.org/critical/thesaurus/synonyms>