The word sneak means to move in a secretive or furtive manner. There are several synonyms for this word, including slink, skulk, creep, tiptoe, and lurk. These words all suggest moving quietly, often with the intention of avoiding detection. The word slink implies a slinking or slouching posture, while skulk suggests hiding or lurking in the shadows. To creep is to move slowly and quietly, often to avoid being heard, while tiptoeing involves walking on the tips of one's toes to make as little noise as possible. To lurk is to hide or wait in a location, often with the intention of spying or ambushing someone.