thin
 
thin
 (thĭn) adjective
thinner
, thinnest
1.
	a. Relatively small in extent from one surface to the opposite, usually in the smallest solid dimension: a thin book. b. Not great in diameter or cross section; fine: thin wire.
2.	Lean or slender in form, build, or stature. 
3.	a. Not dense or concentrated; sparse: the thin vegetation of the plateau. b. More rarefied than normal: thin air.
4.	a. Flowing with relative ease; not viscous: a thin oil. b. Watery: thin soup.
5.	Sparsely supplied or provided; scanty: a thin menu; thin trading. 
6.	Lacking force or substance; flimsy: a thin attempt. 
7.	Lacking resonance or fullness; tinny: The piano had a thin sound. 
8.	Lacking radiance or intensity: thin light. 
9.	Not having enough photographic density or contrast to make satisfactory prints. Used of a negative. 
adverb
1.
	In a thin manner: Spread the varnish thin if you don't want it to wrinkle. 
2.
	So as to be thin: Cut the cheese thin. 
verb
, transitive & intransitive
thinned, thinning, thins
To make or become thin or thinner. 
[Middle English, from Old English thynne.]
 thin
ʹly adverb
 thin
ʹness noun
 thin
ʹnish adjective