88 entries under significant topic. ×

17
large(adjective, open, great, big)
16
ample(adjective, adverb, great, reasonable, fair)
16
substantial(adjective, great, reasonable, fair, big)
13
goodly(adjective, great, big, substantial)
9
bulky(adjective, great, big, large)
9
considerable(adjective, great, big, substantial)
8
appreciable(adjective, reasonable, substantial, large)
8
estimable(adjective, substantial, definite, considerable)
8
sizeable(adjective, substantial, large)
7
healthy(adjective, fair, big, enthusiastic, vigorous)
6
huge(adjective, great, big, full)
4
generous(adjective, great, fair, big, important)
4
plentiful(adjective, great, big, substantial)
4
sound(adjective, strong, solid, big, important)
3
measurable(adjective, substantial, definite, size)
2
astronomical(substantial, large)
2
much(adjective, substantial, large, plenty)
2
solid(adjective, strong, big, important, enthusiastic)
2
strong(adjective, solid, big, important, enthusiastic)
2
super(great, big, substantial, large)
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APASmart Define. (2016). sizable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/sizable/thesaurus/synonyms
ChicagoSmart Define. 2016. "sizable thesaurus" https://smartdefine.org/sizable/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, sizable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/sizable/thesaurus/synonyms>.
MLASmart Define. "sizable thesaurus" 24 March 2016. Web. 21 September 2026. <https://smartdefine.org/sizable/thesaurus/synonyms>