formidable

UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/fərˈmɪdəbəl/, /ˈfɔːrmɪdəbəl/

US:USA pronunciation: IPAUSA pronunciation: IPA/ˈfɔrmɪdəbəl/

US:USA pronunciation: respellingUSA pronunciation: respelling(fôr′mi də bəl)



formidable
WordReference English Thesaurus © 2025
Sense: Adjective: challenging
Synonyms:
challenging Collocations, difficult Collocations, hard Collocations, tough Collocations (informal), demanding Collocations, arduous, herculean, tall Collocations, ambitious Collocations, exacting, taxing, rigorous, backbreaking, onerous, strenuous, grueling, gruelling (UK)
Sense: Adjective: impressive or strong
Synonyms:
impressive Collocations, imposing, strong Collocations, mighty Collocations, powerful Collocations, tremendous Collocations, great Collocations
Sense: Adjective: inspiring fear
Synonyms:
forbidding, daunting Collocations, intimidating, fearsome, frightening Collocations, fearful Collocations, scary Collocations, dreadful Collocations, terrifying Collocations, frightful, spine-chilling, horrifying, horrendous, horrible Collocations


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