Definition of "undoing" []

• Present participle of undo. (verb)
• The act of unfastening or loosening. (noun)
• Ruin; destruction. (noun)
• The act of bringing to ruin. (noun)
• A cause or source of ruin; downfall: Greed was his undoing. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "And they would expect Bart Stupak to immediately begin undoing that proposal as soon as it passed."
• "Also, if I remember correctly, Dr. Ornish is a physician who specializes in undoing some forms of cardio-vascular disease solely through diet and exercise (i.e., without surgery or other invasive procedures)."
• "The undoing is almost always more difficult than the doing (page 185)."