1 deteriorate | Definition of deteriorate

deteriorate

verb
de·​te·​ri·​o·​rate | \ di-ˈtir-ē-ə-ˌrāt How to pronounce deteriorate (audio) , dē-\
deteriorated; deteriorating

Definition of deteriorate

transitive verb

1 : to make inferior in quality or value : impair Exposure to sunlight may deteriorate the paint.

intransitive verb

: to become impaired in quality, functioning, or condition : degenerate allowed a tradition of academic excellence to deteriorate his health deteriorated

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Other Words from deteriorate

deteriorative \ di-​ˈtir-​ē-​ə-​ˌrā-​tiv How to pronounce deteriorative (audio) , dē-​ \ adjective

Examples of deteriorate in a Sentence

efforts to save a deteriorating rain forest Exposure to rain and sun will gradually deteriorate the paint.

Recent Examples on the Web

Ultimately, nearly 90% of subsidies went to Laurel, while the 149-year-old Pimlico continued to deteriorate, a Baltimore Sun investigation found in February. Baltimore Sun Staff, baltimoresun.com, "Maryland legislature probes horse racing panel’s oversight of subsidies for racetracks," 6 Sep. 2019 As the economy improved and the lighthouse — which receives 200,000 visitors a year from all over the world — continued to deteriorate, drawing embarrassing media coverage, state parks officials and state lawmakers made it more of a priority. Paul Rogers, The Mercury News, "$9 million restoration OK’d for historic Pigeon Point Lighthouse on San Mateo County coast," 6 Sep. 2019 Although Harper’s health slowly began to deteriorate in the past several months, Cacciotti, 78, took it upon himself to ensure that his wife was as comfortable as possible in some of the final moments of her life. Eric Todisco, PEOPLE.com, "How Valerie Harper's Husband Tony Cacciotti Was Undyingly Devoted to Her Until the End," 30 Aug. 2019 Analysts said the outlook for growth in Asia's premier financial hub was weak, and could deteriorate further if protests seen over the past two months continue. Laura He, CNN, "Hong Kong's economy is slumping. Mass protests could make things much worse," 31 July 2019 Lastly, there is Muriel (Anne Reid), the grandmother who lives alone in a ramshackle house in Manchester where everybody gathers once a year, and then more frequently as the situation in the world begins to deteriorate. Tim Goodman, The Hollywood Reporter, "Critic's Notebook: HBO's 'Years and Years' Is Unsettling, But Needs to Be Seen," 31 July 2019 But Chinese consumer confidence now seems to have flattened at a level best described as still very glum, but not rapidly deteriorating further. New York Times, "Trump Goads China and Plays Down Chances of a Trade Deal Before 2020," 30 July 2019 She was given antibiotics, but her condition deteriorated further. Bill Lambrecht, ExpressNews.com, "House opens inquiry into treatment of children at migrant detention facilities," 10 July 2019 The figures could deteriorate further: Mayor Erin Stewart could veto the council budget in the next week, which would wipe out the $429,000 increase. Don Stacom, Courant Community, "New Britain Schools: No Layoffs Despite Budget Uncertainty," 11 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'deteriorate.' 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 deteriorate

1572, in the meaning defined at transitive sense 1

History and Etymology for deteriorate

Late Latin deterioratus, past participle of deteriorare, from Latin deterior worse, from de- + -ter (suffix as in Latin uter which of two) + -ior (comparative suffix) — more at whether entry 2, -er

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More Definitions for deteriorate

deteriorate

verb

English Language Learners Definition of deteriorate

: to become worse as time passes
: to make (something) worse

deteriorate

verb
de·​te·​ri·​o·​rate | \ di-ˈtir-ē-ə-ˌrāt How to pronounce deteriorate (audio) \
deteriorated; deteriorating

Kids Definition of deteriorate

: to make or become worse or of less value Their relationship deteriorated.

deteriorate

intransitive verb
de·​te·​ri·​o·​rate | \ di-ˈtir-ē-ə-ˌrāt How to pronounce deteriorate (audio) \
deteriorated; deteriorating

Medical Definition of deteriorate

: to become impaired in quality, functioning, or condition : degenerate her health deteriorated deteriorating vision

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