This is an irregular feature - both in frequency and oddness - dedicated to a word I came across that I have never previously used.
cachexy (sometimes called cachexia) - n. 1. Particularly bad state of health as a result of malnutrition or starvation; 2. depraved manner of thinking, mental deficiencies.
The adjective is "cachectic," and there is a potential adverb form of "cachectically." The word is also sometimes spelled without the [h], as "cacexy." The word is derived from the Greek words kakos ("poor") and hexis ("state" or "disposition").