Burnt-out and Unenergetic

Burnt-out adjective - Destroyed or badly damaged by fire.

Unenergetic and burnt-out are semantically related. In some cases you can use "Unenergetic" instead an adjective phrase "Burnt-out".

Unenergetic adjective - Deficient in alertness or activity.

Burnt-out and unenergetic are semantically related. Sometimes you can use "Burnt-out" instead an adjective "Unenergetic".