cadaverous
emaciated
gaunt
haggard
pinched
skeletal
wasted
very thin especially from disease or hunger or cold
a nightmare population of gaunt men and skeletal boys
eyes were haggard and cavernous
small pinched faces
kept life in his wasted frame only by grim concentration
careworn
drawn
raddled
worn
showing the wearing effects of overwork or care or suffering
looking careworn as she bent over her mending
her face was drawn and haggard from sleeplessness
that raddled but still noble face
shocked to see the worn look of his handsome young face
Charles Dickens