thin

not dense

a thin beard

trees were sparse

lacking excess flesh

you can't be too rich or too thin

Yon Cassius has a lean and hungry look"-Shakespeare

(of sound) lacking resonance or volume

a thin feeble cry

lacking substance or significance

slight evidence

a tenuous argument

lacking spirit or sincere effort

a thin smile

of relatively small extent from one surface to the opposite or in cross section

thin wire

a thin chiffon blouse

relatively thin in consistency or low in density; not viscous

air is thin at high altitudes

a thin soup

very narrow

a thin line across the page

take off weight

lessen the strength or flavor of a solution or mixture

cut bourbon

make thin or thinner

Thin the solution

lose thickness; become thin or thinner