Akademik

requiring great physical effort

↑arduous, ↑backbreaking, ↑grueling, ↑gruelling, ↑hard, ↑heavy, ↑laborious, ↑operose, ↑punishing, ↑toilsome, ↑dragging, ↑exhausting, ↑tiring, ↑wearing, ↑wearying, ↑labored, ↑laboured, ↑labor-intensive, ↑labour-intensive, ↑leaden, ↑plodding, ↑Sisyphean, ↑straining, ↑strenuous