Unintentionally

He unintentionally hit the pedestrian while driving in the fog.

She unintentionally missed the bus because of traffic.

The dog unintentionally dug up the flower bed while playing in the garden.

The hiker unintentionally startled the sleeping bear.

The wind unintentionally blew the papers off the desk.

He unintentionally stumbled upon an old photo album.

They unintentionally forgot their anniversary.

The child unintentionally spilled juice on the couch while playing.

She unintentionally hurt her friend's feelings by not inviting her to the party.

He unintentionally walked into the wrong room.

The actor unintentionally tripped on stage during the play.

She unintentionally hurt her ankle while running on uneven ground.

He unintentionally scared his sister by hiding behind the door.

He unintentionally ate a food that he was allergic to, causing an allergic reaction.

The dog unintentionally knocked over the water bowl.

The actor unintentionally swore on live television.

He unintentionally deleted all of his important files from his computer.

They unintentionally caused confusion with their poorly-worded email.

I unintentionally spilled coffee on my shirt this morning.

The teacher unintentionally gave too much homework for the weekend.

He unintentionally insulted her with his comment.

The driver unintentionally hit a pedestrian while driving in the dark.

He unintentionally ate the gluten-filled cake, causing a reaction.

They unintentionally damaged the car while trying to fix it.

He unintentionally clicked on the wrong button and deleted the entire file.

He unintentionally pressed the wrong button and deleted all his work.

The cat unintentionally knocked over the vase while playing.

The chef unintentionally added too much salt in the dish.