416 entries under adjective topic. ×

2
muscular
2
nasty(bad, hard, rough, difficult)
2
remarkable(great, grand, splendid, fabulous)
2
sinewy
2
slavish(tough, rough, difficult, heavy)
2
stalwart(prevailing, influential, commanding)
2
stunning(awful, wonderful, amazing, grand)
2
stupefying(awful, wonderful, amazing, grand)
2
tiring(hard, tough, severe, rough)
2
towering(great, big, exceptional, marvelous)
2
treacherous(bad, hard, evil, rough)
2
violent(hard, severe, rough, difficult)
2
virile
1
tight
1
able-bodied
1
acute
1
adverse
1
affecting
1
affectionate
1
alpine(great, big, large, lofty)
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APASmart Define. (2015). formidable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/formidable/thesaurus/synonyms
ChicagoSmart Define. 2015. "formidable thesaurus" https://smartdefine.org/formidable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, formidable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/formidable/thesaurus/synonyms>.
MLASmart Define. "formidable thesaurus" 17 July 2015. Web. 24 September 2026. <https://smartdefine.org/formidable/thesaurus/synonyms>