Misprision

Noun: “The deliberate concealment of one’s knowledge of a treasonable act or a felony.” “Neglect or wrong performance of official duty.” “Seditious Conduct.”  Or: “Erroneous judgment particuarly of the value or identity of something.” 

Used in a Sentence: “Perhaps misprision is too strong a word, Assemblyman, but one hopes there’s a day job you can fall back on.” 

(Depending on the erudition of the lawmaker, this could cost the testifier a vote.)

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