鬼鬼祟祟
Up to some hangky-pangky.
Hole-and-corner.
eg：The boy sneaked out his room up to some hangky-panky late in the night.
同义词：偷偷摸摸 On the sly.
反义词：光明磊落 To be open and aboveboard.
Up to some hangky-pangky.
Hole-and-corner.
eg：The boy sneaked out his room up to some hangky-panky late in the night.
同义词：偷偷摸摸 On the sly.
反义词：光明磊落 To be open and aboveboard.
