misdo (v.) Look up misdo at Dictionary.com
Old English misdon, "to do evil or wrong, transgress, err," common Germanic compound (compare Old Frisian misdua, Middle Dutch misdoen, Old High German missituon, German misstun); see mis- (1) + do (v.). Meaning "to do (work, etc.) improperly" is from 1840. Related: Misdone; misdoing.