sly

狡猾的、狡詐的、奸詐的

He was sly enough to get others to do his work.

他很狡猾，總能讓別人替他做事。

會意的、心領神會的、促狹的多指笑容或眼神

She gave me a sly smile across the dinner table.

她在餐桌對面對我露出會意的微笑。

偷偷的、鬼鬼祟祟的

He took a sly look at the answers on her paper.

他偷偷瞄了一眼她考卷上的答案。

偷偷地、私下地、暗中on the sly

He had been smoking on the sly for years.

他多年來都偷偷在抽菸。