We’ve talked before about surprising local pronunciations of things like towns or streets. A term or pronunciation that distinguishes locals from outsiders is called a shibboleth. The word derives from the biblical story of the warring Gileadites and Ephraimites. Gileadites would demand that fleeing Ephraimites pronounce the word shibboleth in a certain way, and if they could not, because their own language pronounced it a different way, they were exposed as the enemy and executed on the spot. This is part of a complete episode.
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