61 entries under significant topic. ×

2
worthwhile(adjective, useful, rich, large)
1
bulky(great, big, heavy, awkward)
1
heavyweight(adjective, heavy, large, considerable)
1
hefty(great, big, heavy, awkward)
1
meaningful(substantial, large, considerable)
1
momentous(substantial, large, considerable)
1
sizable(great, big, substantial, large)
1
valuable(adjective, strong, smart, solid, big)
1
weighty(substantial, large, considerable)
0
appreciable(substantial, large, copious, plenteous)
0
astronomical(substantial, large)
0
big-deal(large, considerable)
0
distinguished(substantial, large)
0
doozie(substantial, large)
0
dynamite(substantial, large)
0
essential(substantial, large)
0
extraordinary(large, considerable)
0
fab(substantial, large)
0
influential(substantial, large)
0
key(large, considerable)
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APASmart Define. (2016). abundant thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/abundant/thesaurus/synonyms
ChicagoSmart Define. 2016. "abundant thesaurus" https://smartdefine.org/abundant/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, abundant thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/abundant/thesaurus/synonyms>.
MLASmart Define. "abundant thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/abundant/thesaurus/synonyms>