So. “Affectedly neat and trim”: Jamieson. Ramsay, 1717: N.E.D.

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1805.  Citizen Lafferty must have a “doncy” opinion of the cause, when he is afraid to bet even.—Lancaster (Pa.) Journal, Oct. 2.

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1806.  

        Tammy is quite a pleasant chiel,
But then he wears a doncy heed [head].
From ‘A Sang, by Burns, Jun.,’ Lancaster Intelligencer, Jan. 14.    

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1846.  I shall give her enough to eat and wear, and I don’t calculate she’ll be very daunsey if she gets that.—E. W. Farnham, ‘Life in Prairie Land,’ p. 39.

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1853.  She brought them [some letters] to my room to keep me from feeling ‘donsy.’—Yale Lit. Mag., xvii. 223 (May).

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1874.  “You look powerful dauncy,” said the old man.—E. Eggleston, ‘The Circuit Rider,’ p. 61.

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