noun
In this context, 'Noughties' is a plural noun that specifically denotes the years from 2000 to 2009.
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The fashion trends of the Noughties are making a comeback in modern day.
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Remember the Noughties when everyone was obsessed with low-rise jeans?
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The Noughties were all about bling and oversized t-shirts.
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In the Noughties, it felt like technology was advancing at the speed of light.