zealous Antonyms

indifferent dispassionate unenthusiastic apathetic unconcerned unfeeling torpid supine stoic uninterested slumbrous slumbery sluggish slothful sleepful shiftless quietist pluckless phlegmatic unmoved by unmoved wappened unconcerned about nonchalant about apathetic towards uncaring uninvolved unresponsive emotionless unmotivated stuporous unenergetic work-shy unambitious ataractic unassertive wishy-washy passive nonchalant half-hearted flagging enervated drowsy drony disinterested dilatory detached dallying cool cold