What Is A Synonym For Formidable?

What Is A Synonym For Formidable? formidable. Antonyms: despicable, weak, contemptible, light, trivial. Synonyms: awful, terrible, alarming, terrifying, discouraging, serious, appalling, fearful, dreadful, horrible, shocking. What word is a synonym of formidable? intimidating, forbidding, redoubtable, daunting, alarming, frightening, terrifying, petrifying, horrifying, chilling, disturbing, disquieting, dreadful, brooding, awesome, fearsome, ominous, foreboding, sinister, menacing, mean-looking, threatening, dangerous.