75 entries under awful topic. ×

46
tremendous(adjective, feature, characteristic, great, difficult)
43
heavy(adjective, feature, characteristic, tough, severe)
39
monstrous(adjective, feature, characteristic, bad, great)
26
fearful(adjective, great, fear, horrible)
22
intimidating(adjective, difficult, horrible, shocking)
13
terrible(adjective, appearance, bad, great, nasty)
12
dreadful(adjective, great, unpleasant, terrible)
12
redoubtable(adjective, tough, terrible, fear)
12
impressive(adjective, tough, difficult, wonderful)
11
dire(adjective, tough, fear, horrible)
10
daunting(adjective, tough, horrible, grand)
10
fearsome(adjective, wonderful, fear, grand)
10
menacing(adjective, bad, tough, severe, unpleasant)
9
alarming(adjective, bad, heavy, fear)
9
frightening(adjective, terrible, wonderful, disgusting)
9
awe-inspiring(adjective, wonderful, fear, amazing)
9
imposing(adjective, tough, wonderful, horrible)
9
shocking(adjective, appearance, bad, great, unpleasant)
9
terrifying(adjective, tough, wonderful, grand)
8
horrible(adjective, great, tough, unpleasant)
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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>