unbendable Antonyms

adaptable inactive improvident impermanent impassive impassible idle hesitating heedless inattentive incurious aperiodic pliable irresolute insouciant insensible indolent indifferent indecisive haphazard flexible derelict content complacent choppy casual careless apathetic ambitionless discontinuous disinterested fickle feeble-minded faineant episodical episodic disregardful dispirited dispassionate bone-idle