Meaning of the word posthaste in English

What does posthaste mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

posthaste

US /ˌpoʊstˈheɪst/
UK /ˌpəʊstˈheɪst/

Adverb

as fast as possible:

Example:
They traveled posthaste to Rome to collect the award.