noun
an event or party characterized by wild and unrestrained behavior
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The party turned into a rager, with loud music and dancing lasting into the early hours of the morning.
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Last night's get-together was a total rager - we had such a great time!
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I heard that concert was a total rager, everyone was going wild!
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The debate between the two politicians turned into a heated rager, with insults flying back and forth.