Definition of post-haste in English:

post-haste

adverb

  • With great speed or immediacy.

    ‘she would go post-haste to England’
    • ‘This was sent to her post-haste and we heard that it was the main attraction at a dinner, which included foreigners.’
    • ‘So I suggest you finish up your vector-hunt post-haste and clear out.’
    • ‘His biggest turn-on is a girl in a bikini, so I had better get to the gym post-haste.’
    • ‘The unmoved expression slowly creeping over Lily's face prompted him to continue explaining post-haste.’
    • ‘The persons responsible ought to be prosecuted in the first instance, the deck must be removed post-haste and the destroyed vegetation replaced immediately.’
    • ‘In the last letter, I had suggested you to reach my place by post-haste but you neither affirmed the proposal nor rejected it.’
    • ‘I haven't read the other two books in the trilogy, and that's a keen regret that I intend to do something about post-haste.’
    • ‘Mind you, if they made a movie of that, I might rouse myself from my burrow post-haste.’
    • ‘Pop the question now, and start planning post-haste.’
    • ‘So it would behove us ‘poorly informed’ environmentalists and ‘street protesters’ to post-haste mend our errant ways.’
    • ‘They are currently awaiting the decision on a planning submission which, if approved, will send them off to structural engineers post-haste.’
    • ‘Call the constable and arrange for a lynch mob post-haste.’
    • ‘Those who have seen it are encouraged to purchase it post-haste.’
    • ‘I loved the film as well (and I'm going to start another thread post-haste on a possible phenomenon I saw in it).’
    • ‘The menu board outside and the bandstand inside inspired me to grab a table post-haste.’
    • ‘I assured him that he could just leave it there in the receiving dock and I'd come get it post-haste.’
    • ‘Which is better, post-haste posting or prior preparation and preening?’
    • ‘Our State and Federal Governments, intimidated by the medical fraternity's recent show of muscle, have scuttled new liability legislation through their parliaments post-haste.’
    • ‘Or was she so strapped for time that she had to write it in post-haste and not even proof read it once.’
    • ‘But the very thought of the potential existence of that possibility is absolutely killing me, and thus must be extinguished post-haste.’
    as quickly as possible, without delay, quickly, very quickly, speedily, swiftly, without further ado, without more ado, with all speed, promptly, immediately, at once, straight away, right away, directly, forthwith
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Origin

Mid 16th century: from the direction ‘haste, post, haste’, formerly given on letters.

Pronunciation

post-haste