surreptitious
adj. 秘密的；鬼鬼祟祟的；暗中的
例句
She sneaked a surreptitious glance at her watch.
她偷偷看了一眼手表。
《牛津词典》
He made a surreptitious entrance to the club through the little door in the brick wall.
他从砖墙的小门偷偷进入俱乐部。
《柯林斯英汉双解大词典》
Rudolph looked surreptitious ly at his watch.
鲁道夫偷偷地看了一下自己的表。
