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Word History: Bigots may have more in common with God than one might think. Legend has it that Rollo, the first duke of Normandy, refused to kiss the foot of the French king Charles III, uttering the phrase bi got, his borrowing of the assumed Old English equivalent of our expression by God. Although this story is almost surely apocryphal, it is true that bigot was used by the French as a term of abuse for the Normans, but not in a religious sense. Later, however, the word, or very possibly a homonym, was used abusively in French for the Beguines, members of a Roman Catholic lay sisterhood. From the 15th century on Old French bigot meant "an excessively devoted or hypocritical person." Bigot is first recorded in English in 1598 with the sense "a superstitious hypocrite."
bigot
1598, from M.Fr. bigot, from O.Fr., supposedly a derogatory name for Normans, the old theory (not universally accepted) being that it springs from their frequent use of O.E. oath bi God. Plausible, since the Eng. were known as whoopees in Joan of Arc's France, and during World War I Americans serving in France were said to be known as les sommobiches (see also son of a *****). But the earliest Fr. use of the word (12c.) is as the name of a people apparently in southern Gaul. The earliest Eng. sense is of "religious hypocrite," especially a female one, and may be influenced by beguine. Sense extended 1687 to other than religious opinions.
Online Etymology Dictionary, © 2001 Douglas Harper
bigot
A person who is religiously attached to a particular computer, language, operating system, editor, or other tool (see religious issues). Usually found with a specifier; thus, "Cray bigot", "ITS bigot", "APL bigot", "VMS bigot", "Berkeley bigot". Real bigots can be distinguished from mere partisans or zealots by the fact that they refuse to learn alternatives even when the march of time and/or technology is threatening to obsolete the favoured tool. It is truly said "You can tell a bigot, but you can't tell him much." Compare weenie.
[The Jargon File]
The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe