Cheerful. Webster’s Dict., 1828. Probably (see quot. 1824) connected with chirp, chirpy.

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1824.  It is not uncommon to see thirty or forty women and children comfortably stowed away in one of the large covered canal boats, as chirp as a flock of blackbirds.—New Bedford Mercury, May 28.

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1843.  A young Miss of Droneville … once replied to a question as to her mother’s health—an old bedridden dame of eighty, “Why, she is not very chirk, but more chirker than she has been; all our folks appear more chirker than they really feel, in order to chirk her up.” [Given as an antiquated rustic expression.]—Yale Lit. Mag., i. 26 (Feb.).

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1857.  Chirk and lively we both were.—Knick. Mag., xlix. 39 (Jan.).

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1857.  The old man sent out for some breakfast, gave us a good feed, and told us to look as chirk and lively as we could.—Id., xlix. 182 (Feb.).

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1871.  See CHIPPER.

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1878.  I didn’t feel real cherk this week, so’t I didn’t go to sewin’ s’ciety, and seems as if I didn’t reelly know a thing.—Rose T. Cooke, ‘Happy Dodd,’ chap. xxvii.

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