unintentionally

She unintentionally offended her friend by forgetting her birthday.

He unintentionally bumped into the table while walking in the dark.

The child unintentionally spilled the milk all over the floor.

I unintentionally deleted all my important files from the computer.

She unintentionally revealed the surprise party plan to her sister.

He unintentionally made a rude comment during the meeting.

The cat unintentionally knocked over the vase on the table.

They unintentionally booked their flights for the wrong dates.

She unintentionally left her phone at home and couldn't be reached.

He unintentionally offended his coworker by making a thoughtless remark.