triskaidekaphobia

Photo of an elevator control panel with no thirteenth floor

Triskaidekaphobia in Action

22 May 2023

Triskaidekaphobia is the fear of the number thirteen or the superstition that the number is associated with bad luck and misfortune. The term is a modern coinage from Greek roots: τρεῖσκαιδεκα (thirteen) + -phobia.

In early use, the term is generally spelled triakaidekaphobia, and the earliest use I have been able to identify is from Tuke’s 1892 Dictionary of Psychological Medicine under the entry for neurasthenia:

Were we to carry this absurdity further, we might distinguish a much greater number of conditions of fear: scopophobia and klopsophobia, the fear of spies and thieves; thanatophobia, the fear of death; necrophobia, the fear of the dead and of phantasms; triakaidekaphobia, the fear of the number thirteen, &c., but what should we gain?

The earliest use with the < s > spelling that I know of is in Worcester, et al.’s 1908 Religion and Medicine: The Moral Control of Nervous Disorders:

To enumerate them were impossible; for a phobia may attach itself to almost any object or idea. Among the more common are “monophobia,” fear of being alone; “claustrophobia,” fear of narrow places; agoraphobia,” fear of broad or open places; “ereuto- phobia,” fear of blushing; “triskaidekaphobia,” fear of the number 13; “mysophobia,” fear of dirt or microbes; “nosophobia,” fear of disease.

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Sources:

Wilson, Douglas G. “[Antedating] Triskaidekaphobia (1908).” ADS-L, 15 March 2009.

Oxford English Dictionary, second edition, 1989, s.v. triskaidekaphobia, n.

Tuke, D. Hack. A Dictionary of Psychological Medicine, vol. 2 of 2. London: J. & A. Churchill, 1892, s.v., neurasthenia, 844. HathiTrust Digital Archive.

Worcester, Elwood, Samuel McComb, and Isador H. Coriat. Religion and Medicine: The Moral Control of Nervous Disorders. New York: Moffat Yard, 1908, 281. HathiTrust Digital Archive.

Photo credit: Yoshimasa Niwa, 2009. Wikimedia Commons. https://commons.wikimedia.org/wiki/File:Elevator_panel_with_no_13_(cropped).jpg Licensed under a Creative Commons Attribution 2.0 Generic license.