Fault is not so much used to talk about someone’s character. Instead we talk about electrical, mechanical or technical faults:
There was a fault in the wiring, and I had no idea how to correct it.There was a delay in the broadcast of the programme, and this was due to a technical fault.A mechanical fault caused the train to come off the rails.
A fault then describes a weakness in something, primarily. But sometimes it is used to describe a weakness in someone’s character:
She has her faults, but, on the whole, she’s a nice person.We all have our own faults, I suppose.
We also have the frequently used expression: It’s (not) my/your/his/etc fault. This is a more idiomatic way of saying: I am (not) to blame or I am (not) responsible (for this unfortunate situation).
It’s not my fault he’s late. Don’t blame me.I’m sorry. It’s my fault. I forgot to pass on the message.If you don’t get enough sleep, it’s entirely your own fault.It was partly the teacher’s fault for giving them too much homework.
Friday, October 10, 2008