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It's my fault – I forgot to give him the message.
It's not my fault that we're late.
If you didn't get enough sleep, it's your own fault.
We missed our flight and it's all your fault!
It was partly the teacher's fault for not explaining things clearly enough.
He seems to have lost the job through no fault of his own.
If a child does not attend school, the fault lies with the parent.
The book's main fault is that it is too long.
For all its faults, it is still the best small car on the market.
This is the American English definition of fault. View British English definition of fault.
very unpleasant or dirty