
Emaciated
Illness or Starvation
Use 'emaciated' when referring to extreme thinness caused by sickness or not eating enough. 
Negative Connotation
'Emaciated' often carries a sense of pity or concern, unlike just being 'thin' which can be neutral or positive. 
Visual Impact
‘Emaciated’ can convey a strong visual image of someone's appearance to the listener. 