English definition of “sneak”
/sniːk/ verb (past tense and past participle sneaked, also US snuck)
sneak into/out/around, etc › to go somewhere quietly because you do not want anyone to hear you: I sneaked into his bedroom while he was asleep.
sneak sth into/out of/through, etc › to take something somewhere without anyone seeing you: We tried to sneak the dog into the hotel.
sneak a look/glance at sb/sth › to look at someone or something quickly and secretly: I sneaked a look at the answers.