It is imperative that you finish your task posthaste.
Source: wiktionary
Posthaste
//ˌpəʊstˈheɪst//
Synonyms for "posthaste" (62 found)
Ranked by relevance and common usage.
Closest matches (13)
Strong matches (18)
Related words (31)
Related word relations
OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.
Sample sentences
3 total sentences available.
"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.
Source: wiktionary
"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."
Source: wiktionary
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.