de·bil·i·tate 
(dĭ-bĭlĭ-tāt′)
(dĭ-bĭlĭ-tāt′)tr.v. de·bil·i·tat·ed, de·bil·i·tat·ing, de·bil·i·tates
To sap the strength or energy of; enervate.
[Latin dēbilitāre, dēbilitāt-, from dēbilis, weak; see bel- in the Appendix of Indo-European roots.]
de·bil′i·tation n.
de·bili·ta′tive adj.