1. Of relatively small extent from one surface to the opposite or in cross section
   "thin wire"; "a thin chiffon blouse"; "a thin book"; "a thin layer of paint" 
2. Lacking excess flesh
   "you can't be too rich or too thin"
   - lean 
3. Very narrow
   "a thin line across the page"
   - slender, slimline 
4. Not dense
   "a thin beard"
   - sparse 
5. Relatively thin in consistency or low in density; not viscous
   "air is thin at high altitudes"; "a thin soup"; "skimmed milk is much thinner than whole milk"; "thin oil" 
6. (of sound) lacking resonance or volume
   "a thin feeble cry" 
7. Lacking spirit or sincere effort
   "a thin smile" 
8. Lacking substance or significance
   "a thin plot"; a fragile claim to fame"
   - flimsy, fragile, slight, tenuous

1. Lose thickness; become thin or thinner 
2. Make thin or thinner
   "Thin the solution" 
3. Lessen the strength or flavour of a solution or mixture
   - dilute, thin out, reduce, cut 
4. Take off weight
   - reduce, melt off, lose weight, slim, slenderize, slim down, slenderise [Brit]

1. Without viscosity
   "the blood was flowing thin"
   - thinly

Derived forms: thinner, thinned, thins, thinnest, thinning

See also: anorectic, anorexic, bladed, body, body weight, boney, bony, cadaverous, capillary, cobwebby, compressed, consistence, consistency, deep-eyed, depressed, diaphanous, distributed, ectomorphic, emaciated, filamentlike, filamentous, filiform, filmy, fine, flat, gangling, gangly, gaunt, gauze-like, gauzy, gossamer, haggard, hairlike, hollow-eyed, hyperfine, insignificant, lank, lanky, light, narrow, pale, paper thin, papery, pinched, rare, rarefied, rarified, rawboned, reedlike, reedy, ribbonlike, ribbony, scarecrowish, scraggy, scrawny, see-through, sheer, shriveled [US], shrivelled [Brit, Cdn], shrunken, skeletal, skinny, sleazy, slender, slender-waisted, slight, slim, slim-waisted, spare, spindle-legged, spindle-shanked, spindly, spiritless, stringy, substance, sunken-eyed, svelte, tenuous, thickness, thinly, thinner, thinness, thinning, threadlike, thready, transparent, trim, twiggy, twiglike, underweight, unimportant, vaporous, vapory [US], vapourous [Brit, non-standard], vapoury [Brit, Cdn], wafer-thin, wasp-waisted, wasted, weedy, wiry, wisplike, wispy, withered, wizen, wizened

Type of: bring down, change state, cut, cut back, cut down, reduce, trim, trim back, trim down, turn, weaken

Antonym: fat, full, thick, thicken

Encyclopedia: Thin

• foreplay
• forequarter
• forereach
• forerun
• forerunner
• foresaid
• foresail
• foresee
• foreseeable
• foreseer
• foreshadow
• foreshadowing
• foreshank
• foreshock
• foreshore
• foreshorten
• foreshow
• foresight
• foresighted
• foresightedness
• foresightful
• foresightfulness
• foreskin
• forest
• forest fire