acataleptic
adj.adj. describing a person who is not afraid of death or pain. It is a very rare word used mostly in medical or philosophical contexts.
adj. not fearing death or pain; impervious to suffering. Often used in philosophical or medical contexts to describe a state of mind or a specific type of patient.
The patient showed an acataleptic attitude toward the surgery.
In some philosophical traditions, the acataleptic person is seen as having achieved a state of perfect peace.
The physician noted that the patient's acataleptic response to the terminal diagnosis suggested a level of emotional detachment that was both surprising and concerning.
From Latin acatalēpticus, from Ancient Greek ἀκατάληπτος (akatálēptos, “incomprehensible”), from ἀ- (a-, “not”) + καταλαμβάνω (katalambánō, “I seize”), from κατά (katá, “against”) + λαμβάνω (lambánō, “I take”).