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Posthaste vs Immediately - What's the difference?

posthaste | immediately |

As adverbs the difference between posthaste and immediately

is that posthaste is quickly, as fast as someone travelling post; with great speed while immediately is in an immediate manner; instantly or without delay.

As a noun posthaste

is .

As a conjunction immediately is

.

posthaste

English

Alternative forms

* post-haste, post haste

Adverb

(-)
  • quickly, as fast as someone travelling post; with great speed
    • It is imperative that you finish your task posthaste .
  • * 1946 — , Ch. 17
    • "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.

    Synonyms

    * (quickly) ASAP, quickly * See also

    Noun

    (-)
  • * 1602 : , act 1 scene 1 l 103-106
    • ''"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."
    English words with consonant pseudo-digraphs

    immediately

    English

    Adverb

    (-)
  • In an immediate manner; instantly or without delay.
    • I hope we can begin immediately .
  • * {{quote-news
    • , year=2011 , date=November 12 , author= , title=International friendly: England 1-0 Spain , work=BBC Sport citation , page= , passage=Spain failed to move through the gears despite exerting control for lengthy spells and a measure of perspective must be applied immediately to the outcome.}}

    Synonyms

    * See also

    Conjunction

    (English Conjunctions)

    • Synonyms

    * as soon as * directly after, after, right after, etc.