- a decrease in volume, force, energy, etc.: a letdown in sales; a general letdown of social barriers.
- disillusionment, discouragement, or disappointment: The job was a letdown.
- depression; deflation: He felt a terrible letdown at the end of the play.
- the accelerated movement of milk into the mammary glands of lactating mammals upon stimulation, as by massage or suckling.
- Aeronautics. the descent of an aircraft from a higher to a lower altitude preparatory to making an approach and landing or to making a target run or the like.
Origin of letdown
First recorded in 1760–70; noun use of verb phrase let down
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for letdown
Over the next couple of years, though, some felt a letdown when they discovered that Borges had written no long works.Borges Had A Genius For Literature But Not Love Or Much Else
October 24, 2014
Marlow: Only a bit of a letdown up until the final handful of episodes!‘Orange Is the New Black’: Inside the Wild S2 Finale and What’s Next for Season 3
Kevin Fallon, Marlow Stern
July 12, 2014
Kent Sepkowitz wrote this past spring that other HIV "cures" didn't last long and this one was likely to be a letdown.The ‘HIV-Cured Baby’ Distorts Hope
March 7, 2014
After the election night letdown the film jumps back to Christmas 2006.Inside ‘Mitt,’ Netflix’s All-Access Mitt Romney Documentary
January 17, 2014
Here are the reasons why the new season of Arrested Development is a letdown.Why ‘Arrested Development’s’ Fourth Season Is a Bust: Contracts and More
May 28, 2013
Word Origin and History for letdown
Online Etymology Dictionary, © 2010 Douglas Harper