The term 'Walk Softly' can be summarized by two crossword solutions: PAD (3 letters) and TIPTOE (6 letters). PAD is an acronym for 'Pressure-Activated Device' which is a device that is activated by pressure, such as a pressure-sensitive mat. TIPTOE is an action that involves moving slowly and quietly, usually on the balls of the feet. Together, these two solutions suggest that walking softly means to move slowly and quietly, using a pressure-activated device if necessary.