with great speed or immediacy, as quickly as possible

Formal and Informal Expressions of posthaste

In different contexts, you can replace 'posthaste' with suitable alternatives. In a more formal setting, 'quickly' is apt. In informal speech or writing, 'ASAP, right away' is a commonplace synonym.

posthaste: Explore its Definition & Usage

posthaste Definition

1with great speed or immediacy
2as quickly as possible

Using posthaste: Examples

Take a moment to familiarize yourself with how "posthaste" can be used in various situations through the following examples!

Example
Please send the documents posthaste.
Example
He ran posthaste to catch the train.
Example
The ambulance arrived posthaste at the scene of the accident.

posthaste Synonyms and Antonyms

Synonyms for posthaste

quickly
swiftly
rapidly

Origins of posthaste

from 'post' meaning 'after' and 'haste' meaning 'speed'

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Summary: posthaste in Brief

'Posthaste' [pōstˈhāst] is an adverb that means 'with great speed or immediacy' or 'as quickly as possible.' It is often used in formal contexts to indicate urgency, such as 'Please send the documents posthaste,' or in informal contexts as 'ASAP' or 'right away.'