Posthaste meaning

pōsthāst
With great speed; rapidly.
adverb
1
0
Great speed; rapidity.
noun
1
0
Great haste, as of a postrider.
noun
1
0
With great haste.
adverb
1
0
Quickly, as fast as someone travelling post; with great speed.

It is imperative that you finish your task posthaste.

adverb
1
0
Advertisement
Alternative spelling of post-haste.
noun
0
0

Origin of posthaste

  • From the phrase haste, post, haste a direction on letters

    From American Heritage Dictionary of the English Language, 5th Edition

  • From the former instruction on letters "˜haste, post, haste', later reinterpreted as a compound of post + haste.

    From Wiktionary