let·​down | \ ˈlet-ˌdau̇n How to pronounce letdown (audio) \

Definition of letdown

 (Entry 1 of 2)

1a : discouragement, disappointment his latest novel is a letdown
b : a slackening of effort : relaxation
2 : the descent of an aircraft or spacecraft to the point at which a landing approach is begun
3 : a physiological response of a lactating mammal to suckling and allied stimuli whereby previously secreted milk from the acini is expelled into ducts and drawn through the nipple

let down

let down; letting down; lets down

Definition of let down (Entry 2 of 2)

transitive verb

1 : to allow to descend gradually
2a : to fail to support felt her parents had let her down
b : disappoint the plot lets you down at the end afraid of letting his father down

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Synonyms & Antonyms for letdown

Synonyms: Noun

Synonyms: Verb

Antonyms: Noun

Antonyms: Verb

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Examples of letdown in a Sentence

Noun the museum exhibit was just so-so, and we returned home with a vague sense of letdown the eagerly anticipated new movie starring our favorite actor turned out to be a big letdown Verb with my poor performance I really felt that I had let my teammates down
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Recent Examples on the Web: Noun The Raiders were embarrassed by the Chargers, but that was a temporary letdown. Los Angeles Times, 7 Oct. 2021 Winners of six of the previous seven in the rivalry, TCU was undone by three turnovers and a second straight miserable performance against the run, joining last weekend's letdown against SMU. Paul Myerberg, USA TODAY, 3 Oct. 2021 Avoiding an emotional letdown gets more difficult this week, however, with 1-3 South Florida coming to town. Joseph Hoyt, Dallas News, 1 Oct. 2021 The preseason buildup has been followed by the regular-season letdown. Eric Branch, San Francisco Chronicle, 29 Sep. 2021 Because this has classic letdown written all over it. Paul Daugherty, The Enquirer, 28 Sep. 2021 Assistant coach Dave Toub answered questions following a second straight fourth-quarter letdown. BostonGlobe.com, 27 Sep. 2021 It’s not unusual for a Power Five football team coming off a tight conference game to experience a letdown when faced with a representative off the lower-level Football Championship Subdivision. Tim Sullivan, The Courier-Journal, 19 Sep. 2021 There was no such letdown Friday as Lake Mary, ranked No. 4 in the area Sentinel Super 16, exploded for 28 points in the second quarter to claim its seventh consecutive win over the Patriots. J.c. Carnahan, orlandosentinel.com, 11 Sep. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'letdown.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of letdown


1768, in the meaning defined at sense 1a


12th century, in the meaning defined at sense 1

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Time Traveler for letdown

Time Traveler

The first known use of letdown was in the 12th century

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Dictionary Entries Near letdown

let down


let down one's guard

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Statistics for letdown

Last Updated

9 Oct 2021

Cite this Entry

“Letdown.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/letdown. Accessed 18 Oct. 2021.

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More Definitions for letdown



English Language Learners Definition of letdown

: something that is not as good as it was expected to be


let·​down | \ ˈlet-ˌdau̇n How to pronounce letdown (audio) \

Kids Definition of letdown


\ ˈlet-ˌdau̇n \

Medical Definition of letdown

 (Entry 1 of 2)

: a physiological response of a lactating mammal to suckling and allied stimuli whereby increased intramammary pressure forces previously secreted milk from the acini and finer tubules into the main collecting ducts from where it can be drawn through the nipple

let down

transitive verb
\ -ˈdau̇n How to pronounce let down (audio) \

Medical Definition of let down (Entry 2 of 2)

: to release (formed milk) within the mammary gland or udder

More from Merriam-Webster on letdown

Nglish: Translation of letdown for Spanish Speakers


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