憊

Exhaustion characterized by depletion or attrition; a state of being "worn thin." While it can describe physical collapse, it frequently carries a psychological or spiritual weight, suggesting a loss of internal reserve.

Typically functions as a stative adjective describing a condition. It can also function resultatively, marking the end-point of a process (e.g., having labored or suffered until exhausted).

Distinguished from 疲 (pí), which refers to standard physiological fatigue resulting from exertion, and 倦 (juàn), which suggests languor, drowsiness, or a more passive weariness. 憊 denotes being absolute "spent."

Contains the component 敝 (bì, meaning ragged or worn out), mirroring the sense of depletion.

Depending on the register of the text, consider "exhausted" (strong), "weary" (literary), or "spent" (visceral). Be alert to an underlying connotation of brokenness or a loss of integrity rather than a simple lack of energy.