Pronunciation

change

Plain form
impoverish

Third-person singular
impoverishes

Past tense
impoverished

Past participle
impoverished

Present participle
impoverishing

  1. (transitive) If you impoverish a person, you make them poor.
  2. (transitive) If A impoverishes B, A weakens the quality of B.
    That exuberant crop quickly impoverishes any fertile soil.