Posthaste

//ˌpəʊstˈheɪst// adv, noun

Definitions

Adverb
  1. 1
    Quickly, as fast as someone travelling post; with great speed. dated, formal, not-comparable

    "It is imperative that you finish your task posthaste."

Noun
  1. 1
    Alternative spelling of post-haste. alt-of, alternative, uncountable

    ""And this, I take it, Is the main motive of our preparations The source of this our watch, and the chief head Of this post-haste and rummage in the land.""

Etymology

Etymology 1

From the former instruction on letters ‘haste, post, haste’, later reinterpreted as a compound of post + haste.

Etymology 2

From the former instruction on letters ‘haste, post, haste’, later reinterpreted as a compound of post + haste.

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