noun
a word used to express joy or approval
verb
to shout 'hooray' in celebration or approval
interjection
used to express joy or approval
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The team won the championship, and the crowd erupted in a resounding hooray.
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Hooray! We finally finished the project ahead of schedule.
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Hooray, we aced the exam!
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After months of hard work, she finally received the promotion she deserved - hooray!