undisciplinable

The bad child, egoistic, undisciplinable, destructive, and quarrelsome, or the child who cannot be taught honesty, or the one who continually runs away, is an unending source of "nervousness" to his mother.

The Nervous Housewife Abraham Myerson 1914

The Celt, undisciplinable, anarchical, and turbulent by nature, but out of affection and admiration giving himself body and soul to some leader, that is not a promising political temperament, it is just the opposite of the Anglo-Saxon temperament, disciplinable and steadily obedient within certain limits, but retaining an inalienable part of freedom and self - dependence; but it is a temperament for which one has a kind of sympathy notwithstanding.

Celtic Literature Matthew Arnold 1855