The term 'walk laboriously' can be described by three crossword solutions: PLOD, TRUDGE, and SLOG. PLOD is a verb meaning to walk slowly and heavily, with effort and determination. TRUDGE is another verb meaning to walk slowly and with great effort, often through difficult terrain or conditions. Finally, SLOG is a verb meaning to walk slowly and with great effort, especially when carrying a heavy load. All three words describe the same action of walking laboriously, but each has its own subtle nuances.