15 entries under extensive topic. ×

10
all-inclusive(adjective, complete, full, broad)
9
broad(adjective, complete, full, broad)
5
wide(adjective, complete, full, grand, universal)
4
total(adjective, universal, broad, comprehensive)
3
all-around(adjective, comprehensive, overall, global)
3
sweeping(adjective, complete, full, grand)
2
widespread(adjective, complete, full, grand)
1
far-reaching(complete, full, grand, universal)
1
indiscriminate(grand, universal, comprehensive, overall)
1
wide-ranging(complete, full, grand, universal)
0
far-ranging
0
momentous
0
significant
0
unlimited(universal, comprehensive, overall, all-purpose)
-1
influential
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APASmart Define. (2016). across-the-board thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/across-the-board/thesaurus/synonyms
ChicagoSmart Define. 2016. "across-the-board thesaurus" https://smartdefine.org/across-the-board/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, across-the-board thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/across-the-board/thesaurus/synonyms>.
MLASmart Define. "across-the-board thesaurus" 29 March 2016. Web. 30 September 2026. <https://smartdefine.org/across-the-board/thesaurus/synonyms>