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Definition of posthaste

posthaste

/ˌpoʊstˈheɪst/
post · haste
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posthaste Lexical Profile

posthaste Game Scores & Validity

• adverb

1

With great speed or immediacy; as quickly as possible.

Example

"Upon receiving the urgent telegram, she packed her bags and traveled to the capital posthaste."

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Antonyms
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• adjective

1

Done with great speed or urgency; immediate.

Example

"The diplomatic crisis required a posthaste departure from the embassy."

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Antonyms
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• noun

1

Great speed or urgency, originally in traveling or dispatching mail (now archaic).

Example

"The royal messenger rode in posthaste to deliver the treaty before dawn."

Synonyms
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Antonyms
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• Rhymes for posthaste

• Nearby Words

postgrad
postgraduate
postgraduation
posthaste
postholder
posthole
postholiday

Word Origin & Etymology

Originating in the 16th century from the old postal direction "Haste, post, haste" written on urgent letters to instruct mounted couriers to ride at maximum speed.

Cite this Entry

Wordmom. (2026). Definition of Posthaste. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/posthaste
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