fearful◼◼◻(frightening) adjective [UK: ˈfɪə.fəl] [US: ˈfɪr.fəl]The fearful noise astonished anyone coming for the first time. = Ce bruit effrayant aurait abasourdi quiconque venait pour la première fois.
frightful◼◼◻(full of fright) adjective [UK: ˈfraɪt.fəl] [US: ˈfraɪt.fəl]
fearsome◼◼◻(frightening, especially in appearance) adjective [UK: ˈfɪə.səm] [US: ˈfɪr.səm]