hooray
From Longman Dictionary of Contemporary Englishhoorayhoo‧ray /hʊˈreɪ, ˌhuːˈreɪ◂/ ●○○ interjection HAPPYshouted when you are very glad about something —hooray noun [countable] → hip hip hooray3Examples from the Corpushooray• Hooray! No more work 'til Monday!Origin hooray (1600-1700) Perhaps from German hurra