'Foul' in the Bible

My face is foul with weeping, And on mine eyelids is death-shade.

Son of man, lift up a lamentation for Pharaoh king of Egypt, and thou hast said unto him: A young lion of nations thou hast been like, And thou art as a dragon in the seas, And thou comest forth with thy flowings, And dost trouble the waters with thy feet, And thou dost foul their flowings.

and at morning, Foul weather to-day, for the heaven is red -- gloomy; hypocrites, the face of the heavens indeed ye do know to discern, but the signs of the times ye are not able!