keep warm
stay warm

Set aside and keep warm for 5 to 10 minutes.

They were still in the middle of the bush, trying to keep warm, and sleep.

Maybe they could find some creative ways to keep warm.

How's a body supposed to keep warm on a cold night?

The buildings of the city are easy to keep warm.

And the only word she said to him was "I hope you're keeping warm"

Back in the car I used enough of it to keep warm and interested.

But we had a lot of Southern guys who were concerned about how to keep warm.

The tea was made and set back to keep warm.

Cover to keep warm for an hour and 15 minutes.