Значение

значений: 1
  1. (устаревшее, официальное, без степеней сравнения)Quickly, as fast as someone travelling post; with great speed.

    It is imperative that you finish your task posthaste.

Происхождение

From the former instruction on letters ‘haste, post, haste’, later reinterpreted as a comp

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

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posthaste — значение, примеры, формы, синонимы | Krumeto