Word of the Day:
higgledy-piggledy
\hig-ul-dee-PIG-ul-dee\ 
adverb
: in a confused, disordered, or random manner
We really have no idea where “higgledy-piggledy” came from, but we do know it’s a perfect example of English speakers’ fondness for reduplication; that is, for forming new words by repetition of a base word with just a slight change of sound. In this case, the “base” word might actually be the second term, which is loosely reminiscent of “pig” and calls to mind the possible association of pigs with disorderliness. (Nathaniel Hawthorne, at least, noted a connection: “pigs, on a march, do not subject themselves to any leader among themselves, but pass on, higgledy-piggledy, without regard to age or sex.”) We also know that the word has been around since before 1600; it appeared as a translation of an Italian word in a 1598 Italian-English dictionary. According to that dictionary, the Italian term could also be translated as “pell-mell” or “helter-skelter” — two other examples of reduplication.
Courtesy of Merriam-Webster Online.