To treat with disrespect or to refuse to accept as worthy of attention; an archaic form meaning to scorn or disdain.
From dis- (meaning to reverse or undo) + ordain (from Latin ordinare, meaning to arrange or command). Over time, this merged with 'disdain' (from Old French desdeign), creating a word meaning to reject someone's authority or worth.
This word is nearly extinct, replaced by the simpler 'disdain,' but it shows how language evolves—sometimes the longer, more logical word loses out to the shorter catchier one.
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