We'll have a devil of a time tracking him if he stays underground.

But with the present depressed state of the market, any oil may stay underground.

People are warned to stay underground during the emergency.

Morgan would not let the children stay underground any longer.

In 1952, Communist Party had to stay underground as they were banned by the government.

Some survivors stayed underground, too afraid to venture out, thus contributing nothing to the town's defense.

When their musical becomes a success, they must decide whether to sell out to commercial interests and transfer it to a theater or stay underground.

Of course, the longer she stays underground, the more difficult it will be to wake her from the spell.

This allows them to stay underground without drying up.

Believe me, it's the hardest thing in the world, trying to stay underground.