Find Synonyms

posthaste Synonyms

Another word for posthaste

Choosing another word for posthaste depends on context, so the 23 synonyms and similar words below are separated across 3 exact definitions and ranked by match strength.
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• adverb (Context 1)

With great speed or immediacy; as quickly as possible.

Usage Example

"Upon receiving the urgent telegram, she packed her bags and traveled to the capital immediately."

Strongest
immediately
right away
at once
promptly
swiftly
forthwith
straightaway
Strong
speedily
hastily
double-quick

• adjective (Context 2)

Done with great speed or urgency; immediate.

Usage Example

"The diplomatic crisis required a speedy departure from the embassy."

Strongest
speedy
immediate
Strong
prompt
swift
rapid
expeditious

• noun (Context 3)

Great speed or urgency, originally in traveling or dispatching mail (now archaic).

Usage Example

"The royal messenger rode in haste to deliver the treaty before dawn."

Strongest
haste
celerity
Strong
dispatch
speed
urgency
rapidity
expedition

Opposites of posthaste

The opposite of posthaste shifts depending on context. Common opposites include:

slowly
leisurely
delay
slowness
unhurried
sluggishly
sluggish
leisure
See all opposites of posthaste

• Nearby Words

postgrad
postgraduate
postgraduation
posthaste
postholder
postholiday
postholocaust

Cite this Entry

Wordmom. (2026). Synonyms for Posthaste. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/posthaste
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