ADJ-GRADED
秘密的;鬼祟的;偷偷摸摸的
If you describe someone as sneaky, you disapprove of them because they do things secretly rather than openly.
例句
It is a sneaky and underhand way of doing business...
这种做生意的方式偷偷摸摸，遮遮掩掩。
One kid can generally tell when another kid is sneaky.
一个小孩鬼鬼祟祟地在干什么事情的时候，通常另一个小孩可以判断出来。