frightening /ˈfrɑɪt.ən.ɪŋ/ /ˈfraɪtnɪŋ/
terrifying /ˈtɛrəˌfaɪɪŋ/ /ˈterɪfaɪɪŋ/
scary /ˈskɛri/ /ˈskeəri/