post haste

A form of posthaste — Quickly, as fast as someone travelling post; with great speed.

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Meanings

adverbpost haste (not comparable)
  1. alternativenot comparableAlternative form of posthaste.

Synonyms & antonyms

Also see
cursoryprecipitantspeedyzippy
Cite this entry
APA

post haste. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/post%20haste

MLA

“post haste.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/post%20haste. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “post haste,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/post%20haste.

Source: post haste on Wiktionary, CC BY-SA 4.0.