burnout

noun

1. (countable, uncountable)The experience of long-term exhaustion and diminished interest, especially in one's career.

   “High on the list of proposals educators said they support to combat burnout – after raising salaries and hiring more teachers — was providing additional mental health and behavioral support for students, according to the 2022 NEA survey.”

2. (countable, uncountable)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. (US, countable, slang, uncountable)Someone whose brains have figuratively been burned out by drugs.

   “There’s no way we can hire that guy. He’s a total burnout—he can't do the work.”

   “Then in his late 30s, he [Neal Cassady] was already a visibly ravaged shadow of Kerouac’s heroically defiant rebel and well on his way to becoming the kind of babbling burnout you don’t want to sit next to on any bus trip, magical or not.”

4. (countable, uncountable)The shutoff of a rocket motor after exhausting its fuel or having been irreversibly throttled after the application of a planned delta-v.
5. (countable, uncountable)The failure of an electrical device, usually through overheating due to the application of excessive power.
6. (countable, uncountable)Use of the throttle to spin the wheels of a vehicle being held stationary, causing the spinning tires to produce smoke and burn rubber.