71 entries under significant topic. ×

1
meaningful(substantial, large, considerable)
1
momentous(substantial, large, considerable)
1
noticeable(adjective, substantial, large)
1
plentiful(great, big, substantial, large)
1
reasonable(substantial, large, adequate)
1
serious(large, controlled, considerable, orderly)
1
strong(large, considerable)
1
valuable(large, considerable)
1
weighty(substantial, large, considerable)
0
astronomical(substantial, large)
0
big-deal(large, considerable)
0
bulky(great, big, large, huge)
0
comfortable(substantial, large, generous, good-sized)
0
commodious(substantial, large)
0
distinguished(substantial, large)
0
doozie(substantial, large)
0
durable(large, considerable)
0
dynamite(substantial, large)
0
essential(substantial, large)
0
extraordinary(large, considerable)
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APASmart Define. (2015). tidy thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/tidy/thesaurus/synonyms
ChicagoSmart Define. 2015. "tidy thesaurus" https://smartdefine.org/tidy/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, tidy thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/tidy/thesaurus/synonyms>.
MLASmart Define. "tidy thesaurus" 11 November 2015. Web. 25 September 2026. <https://smartdefine.org/tidy/thesaurus/synonyms>