Definition of "letdown" []

• A decrease, decline, or relaxation, as of effort or energy. (noun)
• A disappointment: The cancellation of the game was a real letdown. (noun)
• The descent made by an aircraft in order to land. (noun)
• A physiological response in lactating females, activated usually in response to sucking or crying by an infant, in which milk previously secreted into the alveoli of the breasts is released into the ducts that lead to the nipple. (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.

• "Another letdown is a possibility: State's opponent this time is Wisconsin, which handled the Spartans in Madison last season."
• "Part of this letdown is the result of visibility issues."
• "I agree it looks very cool, but the letdown is the scrawny little baby faced actor that the spider-man 3 movie team picked to play him."