59 entries under great topic. ×

8
severe(adjective, appearance, tough, difficult)
7
fierce(adjective, tough, heavy, horrible)
7
overwhelming(adjective, tough, awful, grand)
5
harsh(adjective, hard, severe, rough)
5
stiff(adjective, tough, severe, difficult)
4
astounding(adjective, awful, terrible, grand)
4
steep(adjective, big, large, long)
2
remarkable(adjective, grand, splendid, fabulous)
2
towering(adjective, big, exceptional, marvelous)
1
alpine(adjective, big, large, lofty)
1
altitudinous(adjective, big, large, lofty)
1
elevated(adjective, big, powerful, large)
1
eminent(adjective, big, large, long)
1
flying(adjective, big, large, long)
1
giant(adjective, big, large, lofty)
1
grand(adjective, big, awful, terrible)
1
high-reaching(adjective, big, large, lofty)
1
high rise(expression, adjective, big, large)
1
hovering(adjective, big, large, long)
1
long(adjective, big, large, lofty)
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APASmart Define. (2015). formidable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/formidable/thesaurus/synonyms
ChicagoSmart Define. 2015. "formidable thesaurus" https://smartdefine.org/formidable/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, formidable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/formidable/thesaurus/synonyms>.
MLASmart Define. "formidable thesaurus" 17 July 2015. Web. 23 September 2026. <https://smartdefine.org/formidable/thesaurus/synonyms>