deterioration

noun

de·​te·​ri·​o·​ra·​tion di-ˌtir-ē-ə-ˈrā-shən How to pronounce deterioration (audio)
dē-
Synonyms of deterioration
: the action or process of becoming impaired or inferior in quality, functioning, or condition : the state of having deteriorated
rust deterioration
the deterioration of academic standards
Choose the Right Synonym for deterioration

deterioration, degeneration, decadence, decline mean the falling from a higher to a lower level in quality, character, or vitality.

deterioration implies generally the impairment of value or usefulness.

the deterioration of the house through neglect

degeneration stresses physical, intellectual, or especially moral retrogression.

the degeneration of their youthful idealism into cynicism

decadence presupposes a reaching and passing the peak of development and implies a turn downward with a consequent loss in vitality or energy.

cited love of luxury as a sign of cultural decadence

decline differs from decadence in suggesting a more markedly downward direction and greater momentum as well as more obvious evidence of deterioration.

the meteoric decline of his career after the scandal

Examples of deterioration in a Sentence

the gradual deterioration of the weather a deterioration of academic standards
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Analysts expect Chinese policymakers to stand pat on stimulus measures until there are further signs of economic deterioration. Anniek Bao,evelyn Cheng, CNBC, 18 May 2026 The 1933 bridge, listed on the National Register of Historic Places, is being replaced due to extensive deterioration, with public input accepted until June 4. Chadd Cripe, Idaho Statesman, 16 May 2026 Prior to this, a leading hypothesis for the connection was that vaccines reduce the risk of dementia directly by preventing infections that can lead to inflammation in the brain, which, over time, could cause deterioration. Beth Mole, ArsTechnica, 15 May 2026 The following month, the Veterans Administration filed a report stating that the Nautilus Veterans Hospital was in a severe state of deterioration, mostly because of the dampness from the sea air, which caused the concrete’s steel rods to rust and give way. Miami Herald Archives, Miami Herald, 13 May 2026 See All Example Sentences for deterioration

Word History

Etymology

see deteriorate

First Known Use

circa 1658, in the meaning defined above

Time Traveler
The first known use of deterioration was circa 1658

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Cite this Entry

“Deterioration.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/deterioration. Accessed 21 May. 2026.

Medical Definition

deterioration

noun
de·​te·​ri·​o·​ra·​tion di-ˌtir-ē-ə-ˈrā-shən How to pronounce deterioration (audio)
: the action or process of deteriorating : the state of having deteriorated
personality deterioration
neurological deterioration

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