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Definitions

posthaste

[pohst-heyst] / ˈpoʊstˈheɪst /
ADJECTIVE
fast
Synonyms
WEAK
at once breakneck directly double-quick expeditious flat-out fleet fleetly full tilt hastily hasty headlong lickety-split pell-mell promptly pronto quick quickly rapid rapidly speedily speedy straightaway swift swiftly
ADVERB
fast
Synonyms
WEAK
at once breakneck directly double-quick expeditious flat-out fleet fleetly full tilt hastily hasty headlong lickety-split pell-mell promptly pronto quick quickly rapid rapidly speedily speedy straightaway swift swiftly

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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

From Los Angeles Times • Feb. 26, 2025

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

From Salon • Dec. 22, 2024

Restored, posthaste, thanks to the donations of the private equity tycoon David Rubinstein.

From Slate • Apr. 17, 2019

Your water glass will be forever full, your teapot always replenished and your empty steamer tins removed posthaste.

From Washington Post • Mar. 11, 2019

Obviously you need to get back to Redwall posthaste.

From "Redwall" by Brian Jacques

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.