I looked this word up phonetically (kakectic) and came up with nothing. So once I was done the file I had to look it up in the transcription key. I had not seen or heard of this word before! So now I share it with you.
cachetic: Having cachexia, physical wasting with loss of weight and muscle mass due to disease.
People with advanced cancer or AIDS or other forms of disease may, and often do, appear cachetic.