thin ‧ ly /ˈθɪnli/ BrE AmE adverb
[ Word Family: noun : ↑ thinness , ↑ thinner ; adjective : ↑ thin , ↑ thinning ; verb : ↑ thin ; adverb : ↑ thinly ]
1 . in a way that has a very small distance between two sides or two flat surfaces OPP thickly :
thinly sliced bread
2 . scattered or spread over a large area, with a lot of space in between:
Sow the radish seeds thinly.
The mountain regions are more thinly populated than the lowlands.
3 . thinly disguised/veiled if something is thinly disguised etc, someone is pretending it is something else, but you can easily see what it really is:
He looked at Frank’s new car with thinly veiled envy.