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To systematically undermine a person or the methods and ideas or a person in the eyes of their associates in order to further your own (generally financially related) gain.

Often the act of gampeling someone relies upon obfuscation and half truths combined with muddied waters and the use of terminology designed to baffle the audience.
- Man that guy really gampeled you when he convinced your boss to install Windows on those servers instead of FreeBSD.

- Hey, did you hear that Jim's open source CRM project got completely gampeled?
by Crispin Wheatley February 14, 2007
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