Pasty

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Middle English: from Old French paste(e ), based on late Latin pasta ‘paste’.

wiktionary

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From paste +‎ -y.

From Middle English paste, from Anglo-Norman paste and Old French pasté. Doublet of patty.

etymonline

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pasty (n.)

c. 1300, "a type of meat pie, a pie covered with paste or pie crust," especially one of venison or other seasoned meat, from Old French paste "dough, pastry," from Vulgar Latin *pastata "meat wrapped in pastry" from Latin pasta "dough, paste" (see pasta).

pasty (adj.)

"resembling paste" in consistence or color, 1650s, from paste (n.) + -y (2). Related: Pastiness.