Letters we have sent have been returned unopened or answered only by him.

They would not take her calls, her letters were returned unopened and she finally stopped trying to secure their approval.

The five bids received by the authority were returned unopened.

He wrote to Dominique, but his letters were returned unopened.

All the letters she wrote him were returned unopened.

Envelopes not chosen in the lottery will be returned unopened.

But over the last year, several letters have been returned unopened.

But the hospital just notified me that a bill they sent to his company was returned unopened, and he hasn't returned any of their calls.

Now, Gottfried says, his letters to his father are returned unopened.

Speaking of parents, I dashed off a note to Mother, but it was returned unopened.