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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

Smith will provide all discovery materials in the Jan. 6 case posthaste, as he did in the Mar-a-Lago case.

From Slate • Aug. 2, 2023

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

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.