94 entries under substantial topic. ×

6
large-scale(adjective, big, large, grand)
5
comprehensive(adjective, great, big, large)
4
generous(adjective, great, fair, big, important)
4
gross(adjective, great, big, large)
4
plentiful(adjective, great, big, significant)
4
sensible(adjective, reasonable, large, generous)
4
significant(adjective, definite, large, considerable)
4
wide(adjective, open, great, big)
3
jumbo(adjective, great, big, large)
3
measurable(adjective, significant, definite, size)
2
astronomical(significant, large)
2
full(adjective, great, big, enthusiastic, vigorous)
2
much(adjective, significant, large, plenty)
2
princely(adjective, large, generous)
2
super(great, big, significant, large)
2
weighty(significant, large, sturdy, robust)
2
whopping(adjective, great, big, large)
1
abundant(great, big, significant, large)
1
comfortable(adjective, open, significant, large)
1
commodious(open, large, huge, extensive)
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APASmart Define. (2016). sizable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/sizable/thesaurus/synonyms
ChicagoSmart Define. 2016. "sizable thesaurus" https://smartdefine.org/sizable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, sizable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/sizable/thesaurus/synonyms>.
MLASmart Define. "sizable thesaurus" 24 March 2016. Web. 22 September 2026. <https://smartdefine.org/sizable/thesaurus/synonyms>