Fractious

1. adjective

   unpredictably difficult in operation; likely to be troublesome

   “rockets were much too fractious to be tested near thickly populated areas”

2. adjective

   stubbornly resistant to authority or control

   “a fractious animal that would not submit to the harness”

   Similar: refractory, recalcitrant

3. adjective

   easily irritated or annoyed

   “an incorrigibly fractious young man”

   Similar: cranky, irritable, nettlesome, peevish, peckish, pettish