120 entries under significant topic. ×

2
tangible(adjective, substantial)
2
tolerable(adjective, substantial, large)
2
worthwhile(adjective, strong, solid, big, important)
1
chips are down(expression, idiom, important, historic)
1
decisive(big, important, powerful, substantial)
1
definite(special, individual, substantial, various)
1
determining(big, substantial, valuable, vital)
1
epochal(important, historic)
1
esteemed(vital, imperative)
1
exigent(big, substantial, valuable, vital)
1
far-reaching(big, important, substantial, large)
1
foremost(vital, imperative)
1
front-page(big, substantial, valuable, vital)
1
heavy number(expression, important, historic)
1
important serious(expression, important, historic)
1
importunate(big, substantial, valuable, vital)
1
mattering much(expression, big, substantial, valuable)
1
memorable(important, historic, super-duper, mind-bending)
1
mondo(adjective, substantial, large, striking)
1
necessary(big, substantial, valuable, vital)
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APASmart Define. (2016). considerable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/considerable/thesaurus/synonyms
ChicagoSmart Define. 2016. "considerable thesaurus" https://smartdefine.org/considerable/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, considerable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/considerable/thesaurus/synonyms>.
MLASmart Define. "considerable thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/considerable/thesaurus/synonyms>