To make poor.
To weaken in quality; to deprive of some strength or richness.
That exuberant crop quickly impoverishes any fertile soil.
To become poor.
From Middle English empoverishen, impoverishen, empoverischen, enpoverisshen, Anglo-Norman empoveriss-, from Old French empoverir, from em- + povre, from Latin pauper (“poor”) (English poor).
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