Deplete (verb)

  1. To reduce something greatly in amount or quantity.
  2. To use up a resource completely.

Origin:

Late middle english: from latin deplere "fill up, exhaust", from de- "completely" + plere "to fill".

Examples:

  1. The drought depleted the water supply.
  2. The war depleted the population.
  3. The company's resources were depleted by the project.
  4. The fire depleted the forest.
  5. The disease depleted the number of fish in the lake.
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