horror

/ˈhɔɹɚ/noun

A powerful feeling of shock, fear, or disgust.

Example sentence

“She watched in horror as the vase tipped off the shelf.”

Stronger than 'fear'. 'To my horror' introduces something shocking you witnessed; the film genre sense takes no article.

Related words

alarmA sound or signal that warns people of danger or calls for their attention.frightA sudden, sharp burst of fear brought on by the unexpected appearance of danger, usually passing quickly.uneaseA feeling of worry or discomfort; a sense that something is wrong.terrorA feeling of extreme fear.apprehensionA feeling of worry or dread about something bad that might happen.dreadTo feel great fear or deep anxiety about something that is going to happen.