1) to go about quietly looking for a chance to get food (as wild animals do) or to steal etc (prowl)

2) to go or move quietly and secretly in order to deceive (slink)

3) to (almost) fall as the result of losing one's balance; to go, move or put (something) quietly or quickly, especially without attracting attention (slip)

4) a person who deceives in a cowardly way; to move quietly and secretly in order to deceive (sneak)

5) a part of a plant that supports flowers, leaves or fruit; to walk out in a proud, self-important or serious way; to move quietly and cautiously towards (wild animal etc) in order to get near (stalk)