Windowless

When he came to he found himself lying in a small, windowless cell.

Seek shelter in a fortified, windowless room, preferably underground.

Tom works in a windowless office.

The system administrator sat in a windowless office under fluorescent lights.

I work in a windowless office.

As the hours passed in the windowless interrogation room, the suspect's resolve began to waver, and he finally confessed to his involvement in the crime.

Billionaire Charlie Munger’s controversial plans for a massive, windowless dorm at the University of California, Santa Barbara has left many wondering – how is this even possible?

"There are windowless seats / wheelchair spaces at each end of the coach where the (exterior) sliding door slides between the exterior skin and the interior trim. [...] "My photo is in coach G, the Standard buffet coach, where there's an even longer windowless section."