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

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
Recent Examples on the Web: Noun After a 5-5 letdown in 2020, the struggles continued with a Week 1 loss at UCLA in 2021, and the grumbles became too loud to ignore even with a victory against Florida. Eddie Timanus, USA TODAY, 28 Apr. 2022 The election of Mayor Eric Adams in New York City and ascendance of new Gov. Kathy Hochul was the occasion for optimism followed by a familiar letdown as state and city leaders announced modest increases in funding for housing. Deborah Padgett, CNN, 11 Apr. 2022 Anything less than a World Series would be a letdown with the same stacked lineup and a quality rotation that replaced Carlos Rodon with Michael Kopech. Paul Sullivan, chicagotribune.com, 13 Mar. 2022 All can’t help seeming like a slight letdown to some, given the storied Buckeyes’ national title aspirations this season and their most recent appearance in Pasadena only three years ago. Mark Heim | Mheim@al.com, al, 1 Jan. 2022 Are the Spartans due for a letdown against a Nebraska team that challenged Oklahoma last week on the road? Los Angeles Times, 23 Sep. 2021 The Spartans could be primed for a letdown against the Penguins. Shawn Windsor, Detroit Free Press, 10 Sep. 2021 But a lot of Netflix’s newer content feels like a bit of a letdown. Erik Kain, Forbes, 17 Mar. 2022 Instead of a letdown, USC proceeded to kick the door down. Los Angeles Times, 18 Feb. 2022 See More

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.

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

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

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Statistics for letdown

Last Updated

6 May 2022

Cite this Entry

“Letdown.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/letdown. Accessed 18 May. 2022.

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More Definitions for letdown


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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