What are some geniunely frightening horror movies?

 There are numerous genuinely frightening horror movies that have resonated with audiences over the years. Here are some notable examples across different sub-genres:

1. "The Exorcist" (1973) - Directed by William Friedkin, this classic supernatural horror film follows the demonic possession of a young girl and the attempts to save her through an exorcism. It is known for its intense atmosphere, shocking imagery, and psychological terror.
2. "The Shining" (1980) - Directed by Stanley Kubrick and based on the novel by Stephen King, this psychological horror film explores a family's descent into madness as they stay in an isolated hotel. With its haunting atmosphere, unsettling visuals, and Jack Nicholson's iconic performance, "The Shining" has become a staple in horror cinema.
3. "Psycho" (1960) - Directed by Alfred Hitchcock, this psychological thriller-horror film revolutionized the genre with its suspenseful storytelling and iconic shower scene. It delves into themes of voyeurism, identity, and madness, leaving a lasting impact on horror filmmaking.
4. "Halloween" (1978) - Directed by John Carpenter, this slasher film introduced the iconic character of Michael Myers and set the template for the modern slasher genre. With its tension-building suspense, atmospheric score, and relentless pursuit of its protagonist, "Halloween" remains a classic in the genre.
5. "The Babadook" (2014) - Directed by Jennifer Kent, this psychological horror film tells the story of a mother and son tormented by a mysterious and malevolent entity. It skillfully blends psychological terror, emotional depth, and atmospheric horror to create an unnerving and thought-provoking experience.
6. "The Conjuring" (2013) - Directed by James Wan, this supernatural horror film follows paranormal investigators as they assist a family haunted by a malevolent presence. With its well-crafted scares, effective use of tension, and strong performances, "The Conjuring" revitalized the haunted house sub-genre.
7. "Hereditary" (2018) - Directed by Ari Aster, this psychological horror film explores a family's unraveling after the death of their secretive grandmother. It is known for its atmospheric tension, unsettling imagery, and Toni Collette's powerful performance.
8. "Get Out" (2017) - Written and directed by Jordan Peele, this horror thriller examines racial tensions and social commentary through a suspenseful and thought-provoking narrative. Blending horror and satire, "Get Out" offers chilling moments and a fresh take on the genre.
9. "It Follows" (2014) - Directed by David Robert Mitchell, this supernatural horror film follows a young woman pursued by a mysterious entity after a sexual encounter. It is praised for its atmospheric cinematography, slow-building suspense, and inventive concept.
10. "The Descent" (2005) - Directed by Neil Marshall, this claustrophobic horror film follows a group of female friends who venture into an unexplored cave system. It combines tension, suspense, and visceral scares to create a genuinely frightening experience.

These are just a few examples of genuinely frightening horror movies, and the genre offers a wide range of sub-genres and styles to suit different preferences. The effectiveness of horror films can vary from person to person, as fear is subjective and influenced by individual experiences and sensibilities.