Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • transitive v. To sap the strength or energy of; enervate.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. To make feeble; to weaken.

from the GNU version of the Collaborative International Dictionary of English

  • transitive v. To impair the strength of; to weaken; to enfeeble.

from The Century Dictionary and Cyclopedia

  • To weaken; impair the strength of; enfeeble; make inactive or languid: as, intemperance debilitates the organs of digestion.
  • Synonyms To enervate, exhaust.
  • Weak; feeble.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. make weak

Etymologies

Latin dēbilitāre, dēbilitāt-, from dēbilis, weak; see bel- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin debilitatus, past participle of debilitare ("to weaken, debilitate"), from the adjective debilis ("weak"), from de- + habilis ("able"). (Wiktionary)

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