Answer: mutinous

AnswerCrossword Clue
MUTINOUSReady to take over the ship, perhaps
MUTINOUSRebellious.
MUTINOUSReady to overthrow the captain
mutinousdisposed to, engaged in, or involving revolt against authority
mutinouscharacterized by mutiny; rebellious
mutinousdifficult to control
mutinousdisposed to mutiny