sneakily
1. 偷偷地：gig: (俚语)工作 | sneakily: 偷偷地 | reimburse: 偿还(已花掉的钱)
1. I know about 300 Chinese words, but by strategically inserting nage I can very sneakily double my vocabulary.
adv
1. in a surreptitious manner
e.g. he was watching her surreptitiously as she waited in the hotel lobby
Synonym: surreptitiously