Definition of triskaidekaphobia
: fear of the number 13
triskaidekaphobia was our Word of the Day on 01/13/2010. Hear the podcast!
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Recent Examples of triskaidekaphobia from the Web
On the top of her spelling list these days: triskaidekaphobia, fear of the number 13.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'triskaidekaphobia.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Did You Know?
It's impossible to say just how or when the number thirteen got its bad reputation. There are a number of theories, of course. Some say it comes from the Last Supper because Jesus was betrayed afterwards by one among the thirteen present. Others trace the source of the superstition back to ancient Hindu beliefs or Norse mythology. But if written references are any indication, the phenomenon isn't all that old (at least, not among English speakers). Known mention of fear of thirteen in print dates back only to the late 1800s. By circa 1911, however, it was prevalent enough to merit a name, which was formed by attaching the Greek word for "thirteen" - treiskaideka (dropping that first "e") - to phobia ("fear of").
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