She unpened the chickens and let them roam free.

He received an unpenalized warning for his behavior.

The zookeeper is unpenning the animals.

The bird was unpenned and flew away.

The unpenned story remained untold.

She unpens the letter and starts reading it.

He received an unpenalized free kick for the foul.

He worked for the company for 30 years but was left unpensioned.

The unpent energy of the crowd was palpable.

The fortress remained unpenetrated despite numerous attacks.