Higgledy-piggledy; in hurry and confusion. The Latin hilariter-celeriter comes tölerably near the meaning of post-haste, as Shakespeare uses the expression (2 Henry IV., v. 3):
Sir John, I am thy Pistol and thy friend, And helter-skelter have I rode to thee, And tidings do I bring.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894
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