Brag, vb., 1) intransitively; to boast: “when virtue --ed, beauty would blush for shame,” Lucr. 54. Phoen. 63. LLL V, 2, 683. Merch. III, 4, 69. Merch. III, 4, 69 John III, 1, 122. V, 1, 50. H4B II, 4, 247. V, 3, 124. H5 III, 6, 160. V, 1, 6. V, 2, 144. Oth. II, 1, 225. Having of before the thing boasted: “b. not of thy might,” Ven. 113. Wiv. III, 3, 212. Err. III, 2, 16. Mcb. II, 3, 101. Lr. V, 3, 280. Having to before the person to whom the boast is made: “art thou --ing to the stars,” Mids. III, 2, 407. “you have heard him b. to you he will,” Tw. III, 4, 348. “to b. unto them, 'thus I did,'” Cor. II, 2, 151. Followed by a clause: “nor shall Death b. thou wanderest in his shade,” Sonn. 18, 11. Gentl. IV, 1, 69. Ado V, 1, 60.
In two passages it is evidently used in a good sense, == to talk with pride, to be justly proud: “Verona --s of him to be a virtuous youth,” Rom. I, 5, 69. “conceit, more rich in matter than in words, --s of his substance, not of ornament,” II, 6, 31.
2) transitively: “your --ed progeny,” Cor. I, 8, 12. “he --s his service,” Cymb. V, 3, 93.