Sneaks

noun

1. One who sneaks; one who moves stealthily to acquire an item or information.

   "My little brother is such a sneak; yesterday I caught him trying to look through my diary."

2. A cheat; a con artist.

   "I can't believe I gave that sneak $50 for a ticket when they were selling for $20 at the front gate."

3. An informer; a tell-tale.
4. A ball bowled so as to roll along the ground; a daisy-cutter
5. A sneaker; a tennis shoe.