posthaste

American  

[pohst-heyst] / ˈpoʊstˈheɪst /

adverb

1. with the greatest possible speed or promptness.

   to come to a friend's aid posthaste.

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noun

1. Archaic. great haste.

posthaste British  

/ ˈpəʊstˈheɪst /

adverb

1. with great haste; as fast as possible

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noun

1. archaic great haste

posthaste Cultural  

1. Immediately, with great speed: “Get the flood warning to the media posthaste.”

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Etymology

Origin of posthaste

First recorded in 1530–40; post ³ + haste

Example Sentences

Unsurprisingly, the birds trashed the room, leaving tour manager John Courage to remove them posthaste.

From Salon • Dec. 22, 2024

Grandpa had a bad fall, and his shrewish second wife wants him carted off to a nursing home posthaste.

From Washington Post • Mar. 14, 2023

And unless the labor situation changes posthaste, the report expects an additional million “older workers” to be out of a job before the end of the year.

From Los Angeles Times • Aug. 14, 2020

That production, directed by Deborah Warner at the Old Vic in 2016, reaped such ecstatic notices for its star that it was widely assumed it would be crossing the Atlantic posthaste.

From New York Times • Feb. 20, 2019

Obviously you need to get back to Redwall posthaste.

From "Redwall" by Brian Jacques