Why this word is great
ACENESTHESIA — [Noun] A pathological loss of the sense of one's own bodily existence or physical self-awareness. From the Greek prefix a- ("not, without") + cenesthesia (from Greek koinos, "common," + aisthēsis, "sensation"), literally meaning "without the common sensation" of the body. Unlike anesthesia, a targeted medical silencing of pain, or depersonalization, a broader estrangement from the mental self, acenesthesia is the profound, hollow quieting of the somatic orchestra. It is the unfeeling hand one must visually confirm belongs to oneself, the profound stillness where the subtle hum of a heartbeat has ceased, the vertigo of a mirror reflecting a figure you cannot feel you inhabit. To lose this fundamental hum is to become a ghost haunting its own emptied anatomy.