Slip up

Pro Tip 1/3

Accidental Error

Use 'slip up' when an error happens unintentionally, especially in informal contexts.

I didn't mean to miss the deadline - it was a slip up.

Pro Tip 2/3

Not Deliberate

'Slip up' implies the mistake was not done on purpose; it's a lapse in concentration or memory.

When I slipped up in the presentation, I forgot a key point.

Pro Tip 3/3

Minor Mistakes

A 'slip up' is usually a minor mistake, not a major failure or disaster.

I slipped up and used the wrong word, but no one noticed.