v. i.
She scowled and frowned with froward countenance. Spenser. [ 1913 Webster ]
v. t.
n.
With solemn phiz, and critic scowl. Lloyd. [ 1913 Webster ]
A ruddy storm, whose scowl
Made heaven's radiant face look foul. Crashaw. [ 1913 Webster ]
adv. In a scowling manner. [ 1913 Webster ]