(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. / (transitive) To take something stealthily without permission.

One who sneaks; one who moves stealthily to acquire an item or information. / The act of sneaking / A cheat; a con artist. / An informer; a tell-tale.

In advance; before release to the general public. / In a stealthy or surreptitious manner.

simple past tense and past participle of sneak

Secret or underhand; not openly avowed.

The act of one who sneaks.

present participle of sneak

plural of sneak

To enter without being noticed. / To barely advance or be allowed entry in a competition or organization despite minimal credentials or competitors thought to be superior.

plural of sneaking