FRACTIOUS

quarrelsome, rebellious, unruly, refractory, irritable

easily irritated or annoyed
SYN - cranky, peevish, testy
"An incorrigibly fractious young man."

stubbornly resistant to authority or counsel
SYN - recalcitrant, refractory
"A fractious animal that would not submit to the harness."

unpredictably difficult in operation
"fractious components of a communication system"

"He was a rather fractious boy whomt hey always had to keep an eye on."

"she was careful not to completely extirpate his fracious ways, but to mold it into a good healthy fighting instinct."

"He had reverted to his animal like ways, with a fractious attitude that had originally given him the name raging bull."

"He was diametrically opposed to the system and would treat them with this fractious attitude the rest of his life."