Knacker
verb
To make someone very tired.
After all that running, I am completely knackered.

Often appears as...
- pretty knackered
- utterly knackered
Usage tips
Informal
Colloquial
noun
A person whose job is disposing of dead or unwanted animals.
He works as a knacker in a local animal disposal factory.

verb
To break or destroy something.
You've totally knackered the washing machine!

Often appears as...
- knackered beyond repair
- knackered machine
Usage tips
Informal
Colloquial
verb
To make someone very tired.
After all that running, I am completely knackered.

Often appears as...
- pretty knackered
- utterly knackered
Usage tips
Informal
Colloquial
noun
A person whose job is disposing of dead or unwanted animals.
He works as a knacker in a local animal disposal factory.

verb
To break or destroy something.
You've totally knackered the washing machine!

Often appears as...
- knackered beyond repair
- knackered machine
Usage tips
Informal
Colloquial
Definition 1 of 3

Colloquial Use
Used informally among friends or in casual conversation, not in formal speech or writing.

I'm knackered after the gym session.
British Slang
Predominantly a British term, might confuse speakers of other English varieties.

Marathon training has me absolutely knackered!
Physical Exhaustion
Often refers to being physically exhausted rather than emotionally or mentally tired.

After moving all those boxes, I was knackered.
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