Examples of usage:

  1. They are far less wilful and undisciplined than they used to be; they submit to work, as a necessary evil, far more cheerfully than they used to do; and they base their ideas of social success entirely on athletics. "The Upton Letters" by Arthur Christopher Benson
  2. Three or four thousand undisciplined hunters, against fifty trained, disciplined and organized soldiers, because that was what the spaceport police were. "Four-Day Planet" by Henry Beam Piper
  3. A small number of veterans, headed by Vargas, Mendoza, Tassis, and other chivalrous commanders, routed the undisciplined thousands at a single charge. "Project Gutenberg History of The Netherlands, 1555-1623, Complete" by John Lothrop Motley

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