Hellbent is a term that denotes a fierce determination to achieve a goal. Its antonyms, on the other hand, indicate a lack of such determination. Words like indecisive, apathetic, vacillating, and half-hearted convey an absence of vigour and passion that defines the meaning of hellbent. Someone who is tentative or hesitant lacks the fierce determination that drives someone who is hellbent. Lackadaisical, indifferent, and unconcerned are other antonyms that suggest a detachment from the goal or task at hand, which is a far cry from being hellbent. In short, antonyms for hellbent imply a lack of passion, drive, and focus, which define the latter.