thinnest

adjective thinner, thinnest

1. having relatively little depth; of little extent from one surface or side to the opposite: thin paper
2. having relatively small diameter in relation to length: thin thread
3. having little fat or flesh; lean; gaunt; slender
4. having the constituent elements small in number and not close together; specif.,
   1. scanty in growth; sparsely distributed: thin hair
   2. small in size or number: thin receipts
   3. lacking body; not thick in consistency; watery: thin soup
   4. not dense or heavy: thin smoke, a thin snowfall
   5. rarefied, as air at high altitudes
5. of little intensity; dim; faint; pale: thin colors
6. of little volume or resonance; high-pitched and weak: a thin voice
7. light or sheer, as fabric
8. easily seen through; flimsy or unconvincing: a thin excuse
9. lacking solidity, substance, or vigor; slight, weak, vapid, etc.: a thin plot, thin argument
10. Photog. lacking in density (sense ): said of an underexposed or underdeveloped negative or print

adverb thinner, thinnest

transitive verb, intransitive verb thinned, thinning