45 entries under expression topic. ×

1
decisive importance(importance, significant, valuable)
1
dominant role(importance, main, role)
1
fundamental importance(importance, significant, valuable)
1
guiding role(importance, key, role, leading)
1
important part(importance, key, role, leading)
1
important role(importance, key, role, leading)
1
integral role(importance, key, role, leading)
1
key details(part, detail, element, key)
1
key or vital(importance, key, role, leading)
1
main part(important, star, main, leading)
1
main role(important, star, main, leading)
1
major role(important, star, main, leading)
1
managerial role(importance, key, role, leading)
1
playing key role(important, star, main, leading)
1
primary role(importance, main, role)
1
principal role(importance, main, role)
1
principle part(important, star, main, leading)
1
prominent role(importance, key, role, leading)
1
star part(important, star, main, leading)
1
starring role(important, star, main, leading)
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APASmart Define. (1970). key role thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/key_role/thesaurus/synonyms
ChicagoSmart Define. 1970. "key role thesaurus" https://smartdefine.org/key_role/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 1970, key role thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/key_role/thesaurus/synonyms>.
MLASmart Define. "key role thesaurus" 1 January 1970. Web. 22 September 2026. <https://smartdefine.org/key_role/thesaurus/synonyms>