44 entries under substantial topic. ×

18
large(adjective, significant)
16
ample(adjective, significant, large)
13
big(adjective, significant, large)
13
respectable(adjective, significant, large)
10
tidy(adjective, significant, large)
10
hefty(adjective, significant, large)
9
great(adjective, significant, large)
8
sizable(adjective, significant, large)
7
extensive(adjective, significant, large)
7
huge(adjective, significant, large, excessive)
4
major(adjective, significant, large)
3
appreciable(adjective, significant, large)
3
consequential(adjective, significant, large)
2
astronomical(adjective, significant, large, excessive)
2
fat(significant, large)
2
material(adjective, significant, large)
2
reasonable(significant, large)
1
noticeable(adjective, significant, large)
1
tolerable(significant, large)
0
bountiful(significant, large)
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APASmart Define. (2015). sizeable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/sizeable/thesaurus/synonyms
ChicagoSmart Define. 2015. "sizeable thesaurus" https://smartdefine.org/sizeable/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, sizeable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/sizeable/thesaurus/synonyms>.
MLASmart Define. "sizeable thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/sizeable/thesaurus/synonyms>