“Knackered” means very tired or worn out. People use it to say they have no energy left, either because they have worked hard, done a lot, or just need rest.
In everyday English, especially in British English, people say “I’m knackered” after a busy day, a long trip, or exercise. It’s a casual, natural word, and it often sounds more informal than simply saying “I’m tired.”
Meaning & Usage
You can use “knackered” to describe yourself, another person, or even something that is broken or no longer working well. For example, “My back is knackered” means your back feels very tired or sore.
Examples
“I’m absolutely knackered after work.”
“She looked knackered after the flight.”
“This old car is completely knackered.”
Is “knackered” formal?
No, it’s informal. People use it in casual speech, not in formal writing.
Is “knackered” used in American English?
It is much more common in British English. In American English, people usually say “exhausted” or “worn out.”
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