Alexander Schmidt, Shakespeare Lexicon and Quotation Dictionary

Mad, adj. 1) disordered in the mind, insane: Sonn. 129, 8. 140, 12. Tp. I, 2, 209. III, 3, 58. Meas. V, 60. Err. II, 2, 11. Err. II, 2, 11 IV, 3, 82. IV, 4, 131. Shr. I, 2, 18. III, 2, 19. Tw. I, 5, 145. Tw. I, 5, 145 II, 3, 93 etc. etc. Used of dogs infected with the rabies canina: Wiv. IV, 2, 131. Err. V, 70. Ant. IV, 15, 80. “m. as a buck,” Err. III, 1, 72 (proverbial phrase). “stark m.” Err. II, 1, 59. V, 281. Shr. I, 1, 69. Wint. III, 2, 184. “very m.” H8 I, 4, 28. “to fall m.” Tit. II, 3, 104. “to grow m.” Sonn. 140, 9. “to go m.” Troil. IV, 2, 78. Lr. II, 4, 289. Oth. IV, 1, 101. “to run m.” Lucr. 997. Ado I, 1, 88. Ado I, 1, 88 Tw. II, 5, 212. Wint. III, 2, 184. H4A III, 1, 145. H4A III, 1, 145 H8 II, 2, 130. Troil. V, 1, 54. Tit. IV, 1, 21. Rom. II, 4, 5. IV, 3, 48. IV, 5, 76. Oth. III, 3, 317. “to wax m.” Tit. III, 1, 223.
2) beside one's self, having lost all self-command: “at his own shadow let the thief run m.” Lucr. 997. “sometime her grief is dumb . . . sometime 'tis mad and too much talk affords,” Lucr. 997 “m. that sorrow should his use control,” Lucr. 997 “the fools are m., if left alone,” Gent. III, 1, 99. Lucr. 1108. Wiv. I, 4, 69. III, 5, 154. IV, 1, 4. Mids. III, 2, 441. Merch. IV, 1, 48. V, 176. H4A I, 3, 53. Oth. III, 3, 317. IV, 1, 101 etc.
3) extravagant in any way; gay and frolicksome to wildness and wantonness: “a m. host,” Wiv. III, 1, 115. “do you hear, my m. wenches?” LLL II, 257. “how now, m. spirit?” Mids. III, 2, 4. “fetching m. bounds,” Merch. V, 73. “be m. and merry,” Shr. III, 2, 228. “like a m. lad,” Tw. IV, 2, 139. “how now, m. wag?” H4A I, 2, 50. IV, 2, 55. “m. Shallow,” H4B III, 2, 16. the m. days that I have spent, 37 etc. == furious, passionate: “her eyes are m. that they have wept till now,” Ven. 1062. subject to the tyranny of m. mischances, 738 (the later Qq sad). “the finest m. devil of jealousy,” Wiv. V, 1, 19. “m. ire,” H6A IV, 3, 28. “m. and fantastic execution,” Troil. V, 5, 38. “these hot days is the m. blood stirring,” Rom. III, 1, 4. == inflamed with desire: “he was m. for her,” All's V, 3, 260. “I am m. in Cressid's love,” Troil. I, 1, 51. == foolish, absurd: “a m. fantastical trick,” Meas. III, 2, 98. “his m. attire,” Shr. III, 2, 126. “a m. marriage,” Shr. III, 2, 126 Shr. III, 2, 126 “her m. and headstrong humour,” IV, 1, 212. “as m. in folly,” All's V, 3, 3. “m. world, m. kings,” John II, 561. “he she loved proved m. and did forsake her,” Oth. IV, 3, 27 (cf. All's V, 3, 3).