Over Illinios, low-lying clouds had blotted out the dark bulk of the earth far below the plane.

The air was still and heavy and thick cloud had blotted out the stars.

Dark clouds blotted all the sky.

The hungry clouds had blotted out the moon.

As the sun dropped lower, impenetrable clouds above blotted out the remaining sunlight, quickly lowering the air temperature.

Behind the twisters, clouds and sheets of dust blotted out the hills and mountains.

A bright moon lit the sky, although an occasional heavy cloud blotted it.

A cloud of the powerful anesthetizing vapor blotted across the assassin's black mask.

A ponderous cloud, black as ink, blotted out the jagged line of peaks lying along the southern horizon.

A cloud of dissatisfaction blotted his serene composure.