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With great speed; rapidly.
n. Archaic
Great speed; rapidity.

[From the phrase haste, post, haste, a direction on letters.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


with great haste; as fast as possible
archaic great haste
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014



1. with the greatest possible speed or promptness.
2. Archaic. great haste.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
بأقْصى سُرْعَه


[ˌpəʊstˈheɪst] advin gran fretta
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995


(pəust) noun
(the system of collecting, transporting and delivering) letters, parcels etc. I sent the book by post; Has the post arrived yet?; Is there any post for me?
to send (a letter etc) by post. He posted the parcel yesterday.
ˈpostage (-tidʒ) noun
(the money paid for) the sending of a letter etc by post. The postage was $1.20.
ˈpostal adjective
of, or concerning, the system of sending letters etc. the postal service.
postage stamp
a small printed label fixed to a letter, parcel etc to show that postage has been paid.
postal order
a printed document bought at a post office, which can be exchanged at another post office for the amount of money paid for it.
postbox (ˈpəusboks) noun
(also ˈletterbox, ~ˈmailbox, ~pillar box) a box into which letters etc are put to be collected (and sent to their destination).
postcard (ˈpəuskaːd) noun
a card on which a message may be sent by post, often with a picture on one side (a picture postcard). She sent me a postcard of the Taj Mahal when she was in India.
postcode (ˈpəuskoud) noun
(American zip code) a set of letters and numbers added to the address on a letter to make delivery easier.
ˌpost-ˈfree adjective, adverb
without charge for sending by post. You can send it post-free.
ˌpost(-)ˈhaste adverb
very quickly. He travelled post(-)haste to London.
postman (ˈpəusmən) noun
(American ˈmailman) a person whose job is to (collect and) deliver letters etc. Has the postman been this morning yet?
postmark (ˈpəusmaːk) noun
a mark put on a letter at a post office, showing the date and place of posting, and cancelling the postage stamp. The postmark read `Beirut'.
postmaster (ˈpəusmaːstə) feminine postmistress (ˈpəusmistris) noun
the manager of a post office.
post office
an office for receiving and dispatching letters, parcels etc. Where is the nearest post office?
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.
References in classic literature ?
One after another, several American enthusiasts rushed posthaste to Europe, with dreams of eager nations clamoring for telephone systems, and one after another they failed.
All exporters have been directed by the board to ensure the submission of both documents posthaste.
She took over from the battered Tory leader David Cameron, who had to step aside posthaste after the British public rejected his solicitation and voted to exit the European Union (EU).
Guerrero also put out a statement saying he was 'saddened' by the fire, and assuring the public that personnel had been deployed to immediately restore and reestablish systems and facilities so the office can resume normal operations posthaste.
and would like to propose he walk into a sea of it posthaste."
No other observation can be made except that he acted posthaste after his co-accused was elected, clearly indicative of another prior design and unity of purpose between them," the decision read.
Instead of giving Meralco an additional 60 days to file the ECC as stated by the ERC in its March 20 order, the PSAs should be dismissed posthaste, Junia said.
Update posthaste. In other sneaker departures of the Euro-bent, Axel "Crusher" Cruysberghs has split with NB# as of January 1st.
Berlin, SANA -- German Foreign Minister Frank-Walter Steinmeier on Monday called for reaching a solution to the crisis in Syria posthaste.
I bet the insurance company that covers the exercise facility would put an end to anyone chewing gum posthaste. -- BETTER PRACTICE YOUR HEIMLICH MANEUVER
Joking aside, we would urge the Royal Mail to think of their customers and either announce that these branches are closing permanently or, better still, get them up and running again - posthaste.