wraithlike       
adjective  literary uk/ˈreɪθ.laɪk/ us/ˈreɪθ.laɪk/
 苍白消瘦,虚弱
pale and thin or weak
  a wraithlike figure in a grey floating dress 穿着灰色飘逸长裙的一个苍白消瘦的身影 
 His face is now more gaunt and wraithlike than ever. 他的脸现在比以前更加憔悴、苍白消瘦。 
 See: wraith
 - More examples
- His wraithlike wife complicated his life for years.
- "I feel depressed," she say, looking wraithlike.
- Amit's haunting artwork shows the camp's wraithlike population, emaciated by hunger.