"erring in purpose or action," 1650s, past-participle adjective from misguide (v.). Earlier, "ill-behaved" (late 15c.). Related: Misguidedly; misguidedness.
well-meaning but misguided teachers
misgovernance
misgovernment
misguess
misguidance
misguide
misguided
mishandle
mishap
mishappen
mishear
mishmash