Definition of "sneak"

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

The act of sneaking  examples

A cheat; a con artist.  examples

An informer; a tell-tale.  examples

(obsolete, cricket) A ball bowled so as to roll along the ground; a daisy-cutter

(US) A sneaker; a tennis shoe.  quotations  examples

(American football) A play where the quarterback receives the snap and immediately dives forward.  examples

(intransitive) To creep or go stealthily; to come or go while trying to avoid detection, as a person who does not wish to be seen.  quotations  examples

(transitive) To take something stealthily without permission.  examples

(ditransitive) To stealthily bring someone something.  examples

(transitive, dated) To hide, especially in a mean or cowardly manner.  quotations  examples

(intransitive, informal, with on) To inform an authority of another's misdemeanours.  examples

In advance; before release to the general public.  examples

In a stealthy or surreptitious manner.  quotations  examples