aphetism
/æˈfɛtɪzəm/Definitions
1. noun
A state of being without or freed from the influence of appetite or desire
“The monks lived in a state of aphetism, having renounced worldly desires.”
2. noun
A quality of being unresponsive to or unaffected by external stimuli, including hunger or thirst
“The ascetic’s body demonstrated a remarkable aphetism, allowing him to survive for weeks without food or water.”