The American Heritage® Dictionary of the English Language, 4th Edition
v. To give energy to; activate or invigorate: "His childhood—father in . . . prison, factory work as a boy—both haunted and energized him” ( Frank Conroy).
v. To supply with energy, especially electricity. To turn on power to something.
the GNU version of the Collaborative International Dictionary of English
verb-intransitive. To use strength in action; to act or operate with force or vigor; to act in producing an effect.
v. To give strength or force to; to make active; to alacrify.
The Century Dictionary and Cyclopedia
To endow with energy; impart active force or strength to; make vigorous.
To act with energy or force; operate with vigor; act in producing an effect.
Also spelled energise.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
v. raise to a higher energy level
v. cause to be alert and energetic
Word Usage
"And McCain talking about re-energize is like the Bush's talking about the Duracell Bunny instead of counting the money their making on oil these days."