indefatigable Antonyms

very tired sluggish slothful sleepy shiftless passive negligent listless lethargic lazy languid lackadaisical irresolute indolent indifferent inactive spent tired fit to drop extremely tired awfully tired more dead than alive unenthusiastic on one's last legs zonked done in burned-out work-shy wiped out all in weary unconcerned torpid impassive idle hissing dronish drained do-nothing dog-weary done dilatory debilitated dead beat dallying comatose careless bushed bleary beat