ADJ-GRADED 悄悄的;偷偷摸摸的;鬼鬼祟祟的Stealthy actions or movements are performed quietly and carefully, so that no one will notice what you are doing. 悄悄的;偷偷摸摸的;鬼鬼祟祟的
I would creep in and with stealthy footsteps explore the second-floor.
我會偷偷溜進去,輕手輕腳地查看一下二樓。
It was a stealthy sound made by someone anxious not to be heard.