Adjectives

(s)cadaverous, emaciated, gaunt, haggard, pinched, skeletal, wastedvery 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”
(a)cadaverous, cadavericof or relating to a cadaver or corpse“we had long anticipated his cadaverous end”