unfaltering Antonyms

unenthusiastic unstable uninterested unconcerned uncertain torpid sluggish reluctant passive nonchalant vacillant vacillating wavering in two minds unsure unmotivated cagy work-shy unambitious unsteady undecided unsettled negligent listless lethargic hesitant fickle faltering doubtful dispassionate disinterested casual careless apathetic hesitating idle impassive lazy languid lackadaisical irresolute indolent indifferent indecisive inconstant inactive ambitionless