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Use "unprosperous" in a sentence
"As J.Phillippe Rushton has noted, it breaks the general pattern of tropical counties being unprosperous – because 75% of its population are ethnic Chinese, a classic demonstration of the IQ/National Wealth thesis."
"You no need no specialist knowledge of Welsh politics to realise that this has been an unprosperous enough ground for your party."
"We never met a man, or woman, or child anywhere in this sunny island who seemed to be unprosperous, or discontented, or sorry about anything."