cadaverous

adjectives

very thin especially from disease or hunger or cold
"emaciated bony hands"; "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"
bony, cadaverous, emaciated, gaunt, haggard, pinched, skeletal, wasted
of or relating to a cadaver or corpse
"we had long anticipated his cadaverous end"
cadaveric, cadaverous
is derived from
cadaver
pertains to
cadaver