alteration of hiddie-giddie, from Middle English (Scots) hiddy-giddy, probably reduplication (influenced by hed, head) of giddy
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“Hirdie-girdie.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hirdie-girdie. Accessed 26 Sep. 2023.
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