What is the fear of Friday the 13th called?
The fear of Friday the 13th is called paraskevidekatriaphobia from the Greek words Paraskeví (Παρασκευή, meaning "Friday"), and dekatreís (δεκατρείς, meaning "thirteen"). Nearly 20 million Americans are affected by paraskevidekatriaphobia. It’s also referred to as friggatriskaidekaphobia while being afraid of No. 13 is called triskaidekaphobia. There is at least one Friday the 13th in every year, and at the most there are three.