150 entries under large topic. ×

0
fab(significant, substantial)
0
firm(significant, considerable)
0
influential(significant, substantial)
0
key(significant, considerable)
0
major-league(significant, considerable)
0
marked(significant, substantial)
0
meaningful(significant, substantial, considerable)
0
momentous(significant, substantial, considerable)
0
no end in sight(expression, adjective, idiom, heavy, substantial)
0
notable(quite, fairly, moderately)
0
noteworthy(significant, substantial)
0
noticeable(significant, substantial)
0
pretty much(expression, adverb, quite, fairly)
0
principal(significant, considerable)
0
renowned(significant, substantial)
0
serious(significant, considerable)
0
solid gold(expression, significant, substantial)
0
something(significant, substantial, quite, fairly)
0
something else(expression, significant, substantial)
0
stable(significant, considerable)
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APASmart Define. (2016). ample thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/ample/thesaurus/synonyms
ChicagoSmart Define. 2016. "ample thesaurus" https://smartdefine.org/ample/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, ample thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/ample/thesaurus/synonyms>.
MLASmart Define. "ample thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/ample/thesaurus/synonyms>