98 entries under adjective topic. ×

7
portentous(importance, valuable, main, notable)
7
purposeful(importance, valuable, main, notable)
7
relevant(importance, main, extremely significant)
7
responsible(importance, valuable, main, notable)
7
significative(importance, valuable, main, notable)
7
solemn(importance, valuable, main, notable)
5
heavyweight(great, informal, extraordinary, important)
5
major-league(great, excellent, heavy, important)
4
blue-chip(great, excellent, heavy, important)
4
foremost(lead, head, master, boss)
4
superior(lead, head, master, boss)
3
chief(lead, head, master, boss)
3
high(lead, head, master, boss)
3
main(lead, head, master, boss)
3
primary(lead, head, master, boss)
3
principal(lead, head, master, boss)
3
prominent(important, outstanding, large, serious)
3
star(lead, head, master, boss)
2
big-time(great, heavy, outstanding, large)
2
bigtime(informal, important)
11 years ago|1.4k views|share |citing 
APASmart Define. (2015). big-league thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/big-league/thesaurus/synonyms
ChicagoSmart Define. 2015. "big-league thesaurus" https://smartdefine.org/big-league/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, big-league thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/big-league/thesaurus/synonyms>.
MLASmart Define. "big-league thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/big-league/thesaurus/synonyms>