frightening

Synonyms
1. shock, startle, dismay, intimidate. Frighten, alarm, scare, terrify, terrorize, appall all mean to arouse fear in people or animals. To frighten is to shock with sudden, startling, but usually short-lived fear, especially that arising from the apprehension of physical harm: to frighten someone by a sudden noise. To alarm is to arouse the feelings through the realization of some imminent or unexpected danger: to alarm someone by a scream. To scare is to frighten, often without the presence of real danger: Horror movies really scare me. To terrify is to strike with violent, overwhelming, or paralyzing fear: to terrify a city by lawless acts. To terrorize is to terrify in a general, continued, systematic manner, either wantonly or in order to gain control: His marauding armies terrorized the countryside. To appall is to overcome or confound by dread, dismay, shock, or horror: The suffering caused by the earthquake appalled him.