Entries linking to hooray
1680s, apparently an alteration of huzza; it is similar to shouts recorded in German, Danish, and Swedish; perhaps it was picked up by the English soldiery during the Thirty Years' War. Hurra was said to be the battle-cry of Prussian soldiers during the War of Liberation (1812-13), "and has since been a favourite cry of soldiers and sailors, and of exultation" [OED]. Hooray is its popular form and is almost as old. Also hurray (1780); hurroo (1824); hoorah (1798). As a verb from 1798. American English hurra's nest "state of confusion" is from 1829.
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<a href="https://www.etymonline.com/word/hooray">Etymology of hooray by etymonline</a>
Harper, D. (n.d.). Etymology of hooray. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/hooray
Harper Douglas, “Etymology of hooray,” Online Etymology Dictionary, accessed $(datetime), https://www.etymonline.com/word/hooray.
Harper, Douglas. “Etymology of hooray.” Online Etymology Dictionary, https://www.etymonline.com/word/hooray. Accessed $(datetimeMla).
D. Harper. “Etymology of hooray.” Online Etymology Dictionary. https://www.etymonline.com/word/hooray (accessed $(datetime)).