The English phrase "conk out" is a verb that means to stop working or to stop functioning. It can also refer to someone feeling very tired or exhausted and unable to keep going. It is often used informally.
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In more advanced contexts, "conk out" can also imply a sudden failure, often unexpected, like a computer crashing or a power outage.
While "conk out" primarily refers to stopping function or energy, in informal speech, "conk" can also mean to hit someone on the head (though this is less common).
"Conk out" is itself a phrasal verb. It can be used in idiomatic expressions like: - "I was running on empty and finally conked out." - "If you push yourself too hard, you might conk out before you reach your goals."
"Conk out" is a versatile, informal English phrase that you can use to describe anything that stops working or someone who is very tired.