deplete

/di-ˈplēt/

borrowed from Latin dēplētus, past participle of dēplēre "to drain, draw off, empty out," from dē- de-plērē "to fill"

verb

  1. to empty of a principal substance

  2. to lessen markedly in quantity, content, power, or value

The lake was depleted of water.

deplete drain exhaust impoverish bankrupt mean to deprive of something essential to existence or potency. deplete implies a reduction in number or quantity so as to endanger the ability to function. drain implies a gradual withdrawal and ultimate deprivation of what is necessary to an existence.