Is Impoverished a Verb or Adjective?

Poor; reduced to poverty. Deprived; depleted; limited.

Is impoverished a adjective?

IMPOVERISHED (adjective) definition and synonyms | Macmillan Dictionary.

Is impoverished an adverb?

In a poor manner or condition; without plenty, or sufficiency, or suitable provision for comfort. With little or no success; indifferently; with little profit or advantage.