Definitions of fractious:

• adjective:   stubbornly resistant to authority or control

  Example: "A fractious animal that would not submit to the harness"

• adjective:   unpredictably difficult in operation; likely to be troublesome

  Example: "Rockets were much too fractious to be tested near thickly populated areas"

• adjective:   easily irritated or annoyed

  Example: "An incorrigibly fractious young man"