thin as rail (adjective) emaciated: undernourished; thin
Sinonime: anorexic, atrophied,
attenuate, attenuated, bony, cadaverous, consumptive, famished,
gaunt,
haggard, lank,
lean, like a bag of bones,
meager, peaked, pinched, scrawny, skeletal, skeletonlike, skin-and-bones,
skinny,
starved, thin as rail, underfed,
wasted, wizened
Antonime: fat,
heavy, overnourished, overweight,
plump