Phrases Apologies and Excuses

It was a mistake on my part.

B2

Meaning

I made a mistake.

Example sentences

John: 'It was a mistake on my part. I shouldn't have done that.'

Alice: 'Okay. Let's try to avoid this in the future.'

John: 'It happens. Let's fix it.'

Alice: 'It was a mistake on my part. I misread the instructions.'