featureless

Hands stronger or weaker than this by the value of a king or less may be described as featureless.

His young heroes are sometimes reckoned rather feeble and featureless.

Just one or two minute black featureless figures of men toiled amidst these monster shapes.

Two glowing arms raised up, and then an almost featureless face.

The screen turned featureless gray as the pickups stared blindly into some dimensionless noplace.