Bookish, literary.

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1833.  What! you’re one of the booky fellers, that think on one thing while they are talking about another.—J. K. Paulding, ‘The Banks of the Ohio,’ i. 194 (Lond.).

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1880.  Lessons … which come not of booky teaching, but of experience.—Mark Twain, ‘Tramp Abroad,’ ii. 202. (N.E.D.)

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