- with the greatest possible speed or promptness: to come to a friend's aid posthaste.
- Archaic. great haste.
Origin of posthaste
Related Words for post-hasterapid, energetic, cursory, hasty, agile, brisk, brief, immediate, instantaneous, nimble, sudden, abrupt, hurried, active, expeditious, keen, swift, hot, quick, rapidly
Examples from the Web for post-haste
Historical Examples of post-haste
As it may therefore be of importance, I dispatch it with my own, by my servant, post-haste.Clarissa, Volume 3 (of 9)
Of course we knew at once what it meant, and he set off post-haste.The Works of Guy de Maupassant, Volume VIII.
Guy de Maupassant
He knew that this would start us post-haste for our apartment, which it did.The Van Dwellers
Albert Bigelow Paine
One deadly sickness he had at Kenilworth, when my father was ridden for post-haste.The Caged Lion
Charlotte M. Yonge
A horseman was sent forward, post-haste, to intimate to us that they were on their way.Letters of John Calvin, Volume I (of 4)
- with great haste; as fast as possible
- archaic great haste
Immediately, with great speed: “Get the flood warning to the media posthaste.”