Thin
lank, lanky, gaunt, starved, emaciated, lean, bony, slender, slim, spare, little, sparing, bare, scant, stinted, lacking, wanting, niggard, scraggy, scrawny, withered, wandlike, willowlike, willowy, lithe, narrow, tenuous, slightly-made, skinny, weedy*, peaked; see also thin 2, 4.
Antonyms fat*, plump, stout.