posthaste

[pohst-heyst]

adverb

1. with the greatest possible speed or promptness.

   to come to a friend's aid posthaste.

noun

1. Archaic.,  great haste.

posthaste

/ ˈpəʊstˈheɪst /

adverb

1. with great haste; as fast as possible

noun

1. archaic,  great haste

posthaste

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

Word History and Origins

Origin of posthaste¹

First recorded in 1530–40; post ³ + haste

Example Sentences

Turns out it was an instrument of a different sort, and the resident turned in the weapon at the sheriff’s South Los Angeles station posthaste.

From Los Angeles Times

"The government must apparently pay the $2 billion posthaste — not because the law requires it, but simply because a district judge so ordered," Alito wrote.

From Salon

“Anora” fans must catch up with Manning Walker’s debut posthaste.

From Los Angeles Times

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

From Salon

Ms. Swain, a distinguished senior fellow at the Institute for Faith and Culture, offered Thursday some “free unsolicited advice” for Harvard, a list that included “Fire Claudine Gay posthaste.”

From Washington Times