'Posthaste' definitions:

Definition of 'Posthaste'

From: GCIDE
  • Posthaste \Post`haste"\, n. Haste or speed in traveling, like that of a post or courier. --Shak. [1913 Webster]

Definition of 'Posthaste'

From: GCIDE
  • Posthaste \Post`haste\, adv. With speed or expedition; as, he traveled posthaste; to send posthaste. --Shak. [1913 Webster]

Synonyms of 'posthaste'

From: Moby Thesaurus