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disobey (v.)

late 14c., from Old French desobeir (13c.) "disobey; refuse service or homage," from Vulgar Latin *disoboedire, reformed with dis- from Late Latin inobedire, a back-formation from inobediens "not obeying," from Latin in- "not" + present participle of obedire (see obey). Related: Disobeyed; disobeying.