Definition of "sneak" []

• To go or move in a quiet, stealthy way. (verb-intransitive)
• To behave in a cowardly or servile manner. (verb-intransitive)
• To move, give, take, or put in a quiet, stealthy manner: sneak candy into one's mouth; sneaked a look at the grade sheet. (verb-transitive)
• A person regarded as stealthy, cowardly, or underhanded. (noun)
• An instance of sneaking; a quiet, stealthy movement. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "All of this creates an image, a picture of a regime that would want, if not to actually acquire nuclear weapons tomorrow, to be within what we call a sneak-out or breakout capacity, where once that government makes the decision to make a bomb, it can make a bomb very, very quickly."
• "Vanity Fair magazine on Wednesday offered what it called a "sneak peek" at its 72nd list of the year's style icons, with just the best-of women and men."
• "At a news conference, Thompson said she was hiring a law firm to challenge the bankruptcy filing, which she called a "sneak attack" by council members."