analgesia, anesthesia, callousness, catalepsy, coma, deadness, dullness, electronarcosis, encephalitis lethargica, high, impassibility, imperception, imperceptiveness, imperceptivity, impercipience, inconsiderateness, insensibility, insensibleness, insensitiveness, insensitivity, insentience, lethargy, narcohypnosis, narcolepsy, narcoma, narcotic stupor, narcotization, nod, numbness, obtuseness, pins and needles, sedation, shock, sleeping sickness, sopor, stupor, swoon, thanatosis, thick skin, trance, unfeeling, unfeelingness, unperceptiveness