burnout

noun ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about burnout at Wordnik → Where our words come from →

1. The experience of long-term exhaustion and diminished interest, especially in one's career.
2. A person who has the experience of long-term exhaustion and diminished interest.

   Ten years of this soul-sucking job would turn any ambitious young person into a burnout.

3. A feeling of being overwhelmed and exhausted from stress and overwork, rendering one cynical, uncaring or depression.