surreptitiously
🇺🇸
/ˌsɜːrəpˈtɪʃəsli/
🇬🇧
/ˌsʌrəpˈtɪʃəsli/
adverb
R
in a way that is meant to be hidden or not easily seen
The spy took the document and left the room surreptitiously.
间谍偷偷地拿了文件，然后离开了房间。
translation
偷偷地