fear·some /ˈfɪəsəm $ ˈfɪr-/ adjectiveadj FRIGHTENEDvery frightening 可怕的,吓人的 fearsome• Great big and fearsome Dimetrodon, a species of dinosaur, was the most powerful creature.• There was the other, fearsome, face of royalty.• They watched him intently, like a group of schoolboys would a fearsome master.• He would be a fearsome opponent.• Stalin's fearsome secret police