posthaste
UK/ˌpəʊstˈheɪst//ˌpoʊstˈheɪst/
posthaste adverb: quickly, as fast as someone travelling post; with great speed. Also the alternative spelling of post-haste.
Adverb
posthaste (not comparable)
- Quickly, as fast as someone travelling post; with great speed.
- It is imperative that you finish your task posthaste.
- "Sasi cannot last through the night." These words from his physician, and the spectacle of my friend, now reduced almost to a skeleton, sent me posthaste to Serampore.1946, Paramahansa Yogananda, “Chapter 17”, in Autobiography of a Yogi
Also used as
posthaste is also the alternative spelling of post-haste.
Synonyms of posthaste
Forms of posthaste
| alternative form | post-haste |
|---|---|
| alternative form | post haste |
| alternative form (archaic) | postehaste |
| alternative form (archaic) | poste-haste |
Origin of posthaste
From the former instruction on letters ‘haste, post, haste’, later reinterpreted as a compound of post + haste.
Questions about posthaste
- What does posthaste mean?
- Posthaste means quickly, as fast as someone travelling post; with great speed.
- What part of speech is posthaste?
- Posthaste is an adverb.
- How do you pronounce posthaste?
- Posthaste is pronounced /ˌpəʊstˈheɪst/ (UK).
Words near posthaste in the dictionary
Source and license
Adapted from Wiktionary: posthaste (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
Last updated:
Pronunciation audio from Wikimedia Commons, each file under its own free license: en-us-posthaste.ogg, en-au-posthaste.ogg.
Cite this entry: “posthaste.” Word.ws, https://word.ws/posthaste. Based on Wiktionary, CC BY-SA 4.0.