verb

1. To make poor.

2. To weaken in quality; to deprive of some strength or richness.

   “That exuberant crop quickly impoverishes any fertile soil.”

3. To become poor.

Synonyms: deplete, ruin

adjective

1. Reduced to poverty.

2. Having lost a component, an ingredient, or a faculty or a feature; rendered poor in something; depleted.

   “English has an impoverished inflectional system.”