Sneaked is the original past tense form of sneak, but in the late 1800s, the alternative past tense form snuck began making its way into American English. It is now very common and is considered standard.

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SNEAK definition: to go in a stealthy or furtive manner; slink; skulk. See examples of sneak used in a sentence.

SNEAK definition: 1. to go somewhere secretly, or to take someone or something somewhere secretly: 2. to secretly…. Learn more.

1. Carried out in a clandestine manner: sneak preparations for war. 2. Perpetrated without warning: a sneak attack.

to go in a sly way so as not to be seen or noticed:[no object] Let's sneak out the back door. to act in an underhand way:[no object] He sneaks around and lies to everyone.

Feb 22, 2026 · To sneak (take) something is not the same as to steal something.

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To take something stealthily without permission. I went to sneak a chocolate but my dad caught me.

In addition to moving furtively, sneak can also mean doing something secretly or slipping something in. You might sneak a cookie when no one is looking, or you might sneak your brother into a concert.