They also spent untold hours combining these things with family photographs to make personal albums.

After untold hours of labor on my mother's part, we had an enormous mosaic.

This house brought upon me a flood of ancient memories, for I had spent untold hours here as a child.

"A lot of people have put untold hours to get this car ready for racing in such a short period of time."

"We waited untold hours by the telephone for their phone calls."

On the debit side, there are the untold hours spent mastering the thing.

Here, where he lives, he spends untold hours in his car.

All those charity drives each summer, the untold hours you spend with foster children?

I abused this for untold hours with no issues.