The term 'tread wearily' can be broken down into five different crossword solutions: TRUDGE (6 letters), PLOD (4 letters), TRAIPSE (7 letters), TRAMP (5 letters), and SLOG (4 letters). All of these words refer to a slow, weary, and laborious form of walking. TRUDGE implies a heavy, dragging movement, while PLOD suggests a dull, monotonous pace. TRAIPSE implies a light, aimless wandering, and TRAMP is a slang term for walking long distances. Finally, SLOG implies a slow, difficult journey.