Scareheads are headlines that aim to shock or terrify readers. These types of headlines can be quite effective in generating clicks or engagement, but they can also be misleading or sensationalized. Some synonyms for scareheads include shock headlines, sensational headlines, clickbait headlines, fear-mongering headlines, and alarmist headlines. While these types of headlines can be effective in grabbing attention, it's important to use them sparingly and ethically. Providing accurate and informative headlines that don't rely on fear or shock can build trust with readers and ultimately lead to more sustainable engagement.