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The formal Latin name for the fear of Friday the 13th is “paraskevidekatriaphobia.” This term combines the Greek words “Paraskeví” (meaning Friday) and “dekatreís” (meaning thirteen), with “phobia” (meaning fear).

Etymology:

• Paraskeví (Παρασκευή): Greek word for Friday.
• Dekatreís (δεκατρείς): Greek word for thirteen.
• Phobia (φοβία): Greek word for fear.

This term was coined to describe the specific fear of this particular date, which is considered unlucky in various cultures. An alternative term sometimes used is “friggatriskaidekaphobia,” which incorporates “Frigg,” the Norse goddess for whom Friday is named.

For more detailed information, you can refer to the sources discussing the psychological and cultural aspects of this phobia:

“A Song of Springtime” 1913 John William Waterhouse

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