The beaming murder master was probably on the constant lookout for such suitable characters.

Navy ships also have the manpower and the desire to keep a constant lookout.

The adobe brown eyes set far apart gave him the look of an animal on constant lookout for a predator.

That smug captain of the guard was on constant lookout for prisoners like him.

He kept a constant lookout for the closest taxi in case they decided to snare one.

On his way to the place, Krengle kept a constant lookout for any followers.

One or more of the men kept constant lookout somewhere down the canyon.

As she goes through the game again, she is on a constant lookout for the ring.

Hal set a constant lookout at the high window of the cell.

She had no more than 20 minutes' sleep at a time during the voyage, having to be on constant lookout day and night.