fractious

stubbornly resistant to authority or control; "a fractious animal that would not submit to the harness"; "a refractory child"

easily irritated or annoyed; "an incorrigibly fractious young man"; "not the least nettlesome of his countrymen"

unpredictably difficult in operation; likely to be troublesome; "rockets were much too fractious to be tested near thickly populated areas"; "fractious components of a communication system"