Etymology
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misname (v.)

c. 1500 "to call (someone) by an unsuitable or injurious name;" see mis- (1) "badly, wrongly" + name (v.). From 1520s as "to call by a wrong name." Related: Misnamed; misnaming.

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misnomer (n.)

mid-15c., in law, "an error in a name, mistaken identification of an accused or convicted person," from Anglo-French, Old French mesnomer "to misname, wrongly name," noun use of infinitive, from mes- "wrongly" (see mis- (2)) + nomer "to name," from Latin nominare "nominate" (see nominate). For noun use of French infinitives, see waiver. Meaning "act of applying a wrong name or designation" is from 1630s.

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