[I, Ipr] ~ (on sb) (to sb) (Brit infml derog 口, 贬) (used esp by children 尤为儿童用语) tell an adult about the faults, wrongdoings, etc of another child 告状; 打小报告: She sneaked on her best friend to the teacher. 她向老师告了她最好的朋友一状. 
[Tn] (infml 口) take (sth) secretly (often without permission) 偷偷地做（某事）或取（某物）（常指未获许可）: sneak a chocolate from the box 从盒子里偷拿一块巧克力 * sneak a look at the Christmas presents 朝圣诞礼物偷看一眼. 
(phr v) sneak into, out of, past, etc sth; sneak in, out, away, back, past, etc go quietly and secretly in the direction specified 悄悄地走（向某处）; 溜: He stole the money and sneaked out of the house. 他偷了钱後从房子里溜了出去. * The cat ate the food and sneaked off. 猫吃完食物就偷偷跑了. sneak up (on sb/sth) approach quietly, staying out of sight until the last moment 悄悄接近然後突然出现: James loves sneaking up on his sister to frighten her. 詹姆斯喜欢溜到妹妹身後吓她一大跳. =>Usage at prowl 用法见prowl.> sneak n (infml 口) cowardly deceitful person (esp one who informs on others) 怯懦而惯於欺骗的人（尤指告密者）.
sneak adj [attrib 作定语] acting or done without warning; secret and unexpected 出其不意的; 秘密而突如其来的: a sneak attack 偷袭 * a sneak preview 不公开试映 * a sneak look at a letter 偷看信.
sneakers n [pl] (US; Brit infml 口) = plimsolls: He wore old jeans and a pair of sneakers. 他穿着旧牛仔裤和胶底运动鞋.
sneaking adj [attrib 作定语] (esp of an unwanted feeling) secret and unexpressed （尤指不应有的情感）私下的, 暗地的: have a sneaking respect, sympathy, etc for sb 暗地里敬佩﹑ 同情...某人 * I have a sneaking (ie unproved and vague but possibly right) suspicion that he stole my wallet. 我心想准是他偷了我的钱包.
sneaky adj (-ier, -iest) (infml derog 口, 贬) done or acting in a secret or deceptive way 鬼鬼祟祟的; 偷偷摸摸的: sneaky behaviour 鬼鬼祟祟的举动 * This sneaky girl was disliked by the rest of the class. 全班同学都不喜欢这个鬼头鬼脑的女同学. sneakily adv. sneakinessn [U].
# `sneak-thief n person who steals things without using force, eg through open doors and windows 小偷（不使用暴力的, 如经敞着的门窗入室行窃者）.