Post-haste, very great haste: “Norfolk and myself in haste, p., are come,” H6C II, 1, 139. “the chief head of this p. and romage in the land,” Hml. I, 1, 107. Adjectively: “requires your haste, p. appearance,” Oth. I, 2, 37 (M. Edd. haste-post-haste).
Adverbially, == very hastily: “and hath sent p. to entreat your majesty,” R2 I, 4, 55. “write from us to him, wish him post p.” Oth. I, 3, 46 (Q2 Ff post post haste dispatch).