tenacious Antonyms

weak-willed torpid timid surrendering sluggish slack passive nonchalant negligent malleable loose unattached uncertain unconcerned unretentive unenthusiastic unmotivated unambitious unassertive yielding wishy-washy weak wavering uninterested listless lethargic lazy docile dispassionate disloyal disjointed disinterested cowardly confused compliant casual careless drooping fickle flaccid languid lackadaisical irresolute indolent indifferent indecisive inactive impassive idle hesitant