or let-down

[ let-doun ]
See synonyms for letdown on Thesaurus.com
  1. a decrease in volume, force, energy, etc.: a letdown in sales; a general letdown of social barriers.

  2. disillusionment, discouragement, or disappointment: The job was a letdown.

  1. depression; deflation: He felt a terrible letdown at the end of the play.

  2. the accelerated movement of milk into the mammary glands of lactating mammals upon stimulation, as by massage or suckling.

  3. 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

Words Nearby letdown

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use letdown in a sentence

British Dictionary definitions for let down

let down

verb(tr, mainly adverb)
  1. (also preposition) to lower

  2. to fail to fulfil the expectations of (a person); disappoint

  1. to undo, shorten, and resew (the hem) so as to lengthen (a dress, skirt, etc)

  2. to untie (long hair that is bound up) and allow to fall loose

  3. to deflate: to let down a tyre

  1. a disappointment

  2. the gliding descent of an aircraft in preparation for landing

  1. the release of milk from the mammary glands following stimulation by the hormone oxytocin

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Idioms and Phrases with letdown


Cause to descend, lower, as in They let down the sails. [Mid-1100s]

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.