See how the frightful herds run from the wood.
W. Browne.
2. Full of that which causes fright; exciting alarm; impressing terror;
shocking; as, a frightful chasm, or tempest; a frightful appearance.
Syn. -- Terrible; dreadful; alarming; fearful; terrific; awful; horrid;
horrible; shocking. -- Frightful, Dreadful, Awful. These words all
express fear. In frightful, it is a sudden emotion; in dreadful, it is
deeper and more prolonged; in awful, the fear is mingled with the
emotion of awe, which subdues us before the presence of some invisible
power. An accident may be frightful; the approach of death is dreadful
to most men; the convulsions of the earthquake are awful.
Fright"ful*ly (?), adv. In a frightful manner; to a frightful dagree.
Fright"ful*ness, n. The quality of being frightful.