If you describe someone as cadaverous, you mean they are extremely thin and pale.
例句
...a tall man with a long, cadaverous face.面色蒼白的長臉高個兒男子
英漢詞典釋義
adj.
死人似的, 尸體般的
a cadaverous odor.死尸一樣的氣味
面色灰白的;枯槁的
I saw a cadaverous face appear at a small window.我看到小窗口處出現了一張沒有血色的面孔。
英英詞典釋義
Adjective
1. 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"