Synonyms|115Antonyms|3|Broader|3Narrower|0Related|1

12 entries under extremely significant topic. ×

9
great(adjective, importance, important, large, main)
8
big time(noun, expression, adjective, importance, main)
8
grand(adjective, lead, importance, head, master)
7
big-league(adjective, lead, importance, head, master)
7
core(adjective, lead, importance, head, master)
7
grave(adjective, importance, important, main)
7
key(adjective, lead, importance, head, master)
7
serious(adjective, importance, important, main)
6
big(adjective, importance, important, main)
6
notable(adjective, importance, main)
6
outstanding(adjective, importance, main)
6
remarkable(adjective, importance, main)
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APASmart Define. (2013). big league thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/big_league/thesaurus/synonyms
ChicagoSmart Define. 2013. "big league thesaurus" https://smartdefine.org/big_league/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2013, big league thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/big_league/thesaurus/synonyms>.
MLASmart Define. "big league thesaurus" 18 May 2013. Web. 27 September 2026. <https://smartdefine.org/big_league/thesaurus/synonyms>