By a strange perversion, this word is used by rustics in N. England, Kentucky, Missouri, &c. in the sense of abominable, outrageous; see ‘Dialect Notes,’ i. 23, 79; ii. 327. A similar use is found in Herefordshire. (N.E.D.)

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1833.  It would be ridic’lous if it should be a bar [said the Kentuckian], them critters sometimes come in here, and I have nothing but my knife.—Knick. Mag., i. 90.

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1834.  “Why, sir,” said an Illinois man to me, who was on the spot shortly afterward, “those Indians behaved most ridiculous. They dashed children’s brains against the door-post; they cut off their heads, they tore—.”—C. F. Hoffman, ‘A Winter in the Far West,’ i. 267 (Lond., 1835). (Italics in the original.)

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1890.  Ridiculous is used in Barbadoes, where many old-time expressions survive, to mean strange, unexpected, untoward. A man once informed me that the death by drowning of a relative was “most ridiculous.”—A correspondent of Notes and Queries, 7 S. ix. 453.

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