- 1in a way that produces a thin piece or layer of something Slice the potatoes thinly. The ointment should be spread thinly on the bruised areas.
- 2with only a few things or people spread over a place so that there is a lot of space between them a thinly populated area
- 3in a way that is not sincere or enthusiastic She smiled thinly.
- 4in a way that does not hide the truth very well synonym barely The novel is a thinly disguised autobiography. thinly veiled contempt