The term 'be stealthy' can be summarized by two crossword solutions: 'TIPTOE' (6 letters) and 'SNEAK' (5 letters). Tiptoeing is a way of walking quietly, usually done by placing the feet lightly on the ground in order to avoid making noise. Sneaking is a way of moving around without being noticed, often done by crouching low and using cover to stay out of sight. Both of these actions are used to be stealthy and avoid detection.