Open English Wordnet
Adverbs
(r)thinlywithout force or sincere effort“smiled thinly” (r)thinly, thinwithout viscosity“the blood was flowing thin” (r)thinly, lightlyin a small quantity or extent“spread the margarine thinly over the meat”,
“apply paint lightly” (r)thinlyin a widely distributed manner“thinly overgrown mountainside”