I managed to sneak a note to him.

我设法偷偷给他递了张条子。

《牛津词典》

You sneak a look at your watch to see how long you've got to wait.

你偷偷看一眼手表，看还要等多久。

《柯林斯英汉双解大词典》

The other is what's known rather judgmentally among zoologists as a "sneak," a small cuttlefish who changes his color and appearance to look like a female.

另一个则被生动物学家们主观的称其为“滑头”，一只小型的乌贼，他往往能够变化它的颜色使它自己看上去像一只雌性乌贼。

youdao

The Iran project, he says, "may be on indefinite hold, " but he is currently working on a film about Pakistan (you can catch a sneak peek here).

FORBES

"We will have a sneak peek of this device at our (Thursday) press conference, " wrote a spokesman for the carrier in an e-mail.

CNN: CES has tablets galore, but why can't we touch them?

No Southampton Biomass (NSB) called it an attempt to "sneak in a large scale development under our radar with purposely misleading literature and dubious environmental claims".

BBC: Southampton docks biomass marine design is chosen