impoverishing
Webster's Dictionary (GCIDE)
Impoverish \Im*pov"er*ish\, v. t. [imp. & p. p. Impoverished; p. pr. & vb. n. Impoverishing.] [OF. empovrir; pref. em- (L. in) + povre poor, F. pauvre; cf. OF. apovrir, F. appauvrir, where the prefix is a-, L. ad. Cf. Empoverish, and see Poor, and -ish.]
1.To make poor; to reduce to poverty or indigence; as, misfortune and disease impoverish families. [1913 Webster]
2.To exhaust the strength, richness, or fertility of; to make sterile; as, to impoverish land. [1913 Webster]