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

If you were taken by Donnie Yen’s electrifying supporting turn in “John Wick: Chapter 4,” well, add this one to your queue posthaste.

From New York Times • Jun. 30, 2023

If he does, you tell on him posthaste.

From Slate • Aug. 26, 2020

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

Obviously you need to get back to Redwall posthaste.

From "Redwall" by Brian Jacques