Definition

/sniːk/

noun

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

verb

To creep or go stealthily; to come or go while trying to avoid detection, as a person who does not wish to be seen.
“He decided to sneak into the kitchen for a second cookie while his mom was on the phone.”
To take something stealthily without permission.
“I went to sneak a chocolate but my dad caught me.”
(ditransitive) To stealthily bring someone something.
“She asked me to sneak her a phone next month.”
To hide, especially in a mean or cowardly manner.
(with on) To inform an authority of another's misdemeanours.
“If you sneak on me I'll bash you!”

adjective

In advance; before release to the general public.
“The company gave us a sneak look at their new electronic devices.”
In a stealthy or surreptitious manner.
“I was able to get a sneak peek at the guest list.”