To terrify. The phrase the horrors is English: see 1768, 1780; but give the horrors is perhaps American.
1768. He is coming this way all in the horrors.Goldsmith, The Good-natured Man. (N.E.D.)
1780. London is in the horrors. A spirit of bigotry and fanaticism, mixing with the universal discontents of the nation, has broken out into violences of the most dreadful nature.J. Adams, Familiar Letters (1876), p. 382. (N.E.D.)
1794. The Sans-Culottes have given the horrors to all the aristocrats in the West Indies.Letter from St. Eustatius in The Gazette of the U.S., Phila., Aug. 4.