1) Drain 2) Enfeeble 3) Harm 4) Injure 5) Lay up 6) Make feeble 7) Make weak 8) Put out of action 9) To make feeble 10) To make weak or feeble 11) To weaken 12) Weaken 1) Emaciate 2) Enervate 3) Enfeeble 4) Hinder 5) Impair 6) Weaken 
• (v. t.) To impair the strength of; to weaken; to enfeeble; as, to debilitate the body by intemperance.
De·bil'i·tate transitive verb [ imperfect & past participle Debilitated ; present participle & verbal noun Debilitating .] [ Latin debilitatus , past participle of debilitare to debilitate, from debilis . See D...
Debilitate: To impair the strength or to enfeeble. A chronic progressive disease may debilitate a patient. So may, temporarily, a major surgical procedure. In both cases the weakness is pervasive. Weakness in an arm or leg following the removal of a cast is not debility. The word 'debilitate' comes from the Latin word 'debilis' for 'weak.'
to make weak or feeble; enfeeble: The siege of pneumonia debilitated her completely.
[SAT terms] make weak[PSAT glossary] make weak