Green’s Dictionary of Slang

baccare! excl.

[pig Lat.]

go back!

[UK]Udall Ralph Roister Doister II i: Ah sir, Backare quod Mortimer to his sowe.
[UK]Shakespeare Taming of the Shrew II i: Let us, that are poor petitioners, speak too. Baccare! you are marvellous forward.
[UK]Davies of Hereford Vpon Eng. Prouerbes 42/1: Baccare quoth Mortimer vnto his sowe: But wheres a Mortimer to say so now?
[UK]J. Howell Eng. Proverbs Backare quod Mortimer to his sowe: But wheres a Mortimer to say so now?
[UK]R. Nares Gloss. (1888) I 44: baccare. A cant word, meaning, go back, used in allusion to a proverbial saying, ‘Backare, quoth Mortimer to his sow;’ probably made in ridicule of some man who affected a knowledge of Latin without having it, and who produced his latinized English words on the most trivial occasions.