posthaste

0 antonyms and opposites of posthaste, grouped by meaning.

Adv — Quickly, as fast as someone travelling post; with great speed.

We haven't recorded synonyms for posthaste yet. You can still read its full definition, where it comes from, or words that rhyme with it.

Etymology

From the former instruction on letters ‘haste, post, haste’, later reinterpreted as a compound of post + haste.