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deteriorate

American  
[dih-teer-ee-uh-reyt] / dɪˈtɪər i əˌreɪt /

verb (used with or without object)

deteriorated, deteriorating
  1. to make or become worse or inferior in condition, character, quality, value, etc.

    Synonyms:
    worsen, decline, degenerate
  2. to disintegrate or wear away.


deteriorate British  
/ dɪˈtɪərɪəˌreɪt /

verb

  1. to make or become worse or lower in quality, value, character, etc; depreciate

  2. (intr) to wear away or disintegrate

"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 Word Forms

Etymology

Origin of deteriorate

First recorded in 1565–75; from Late Latin dēteriōrātus “made worse,” past participle of dēteriōrāre “to make worse,” from Latin dēterior “worse,” from de- + -ter-, element in adjectives relating to spatial orientation + -ior, comparative suffix; cf. exterior, interior

Explanation

When something gets worse due to neglect or an unfortunate health problem, stuff starts to deteriorate — or fall apart. The word deteriorate describes anytime something gets worse. Due to neglect, a relationship can deteriorate but so can the American highway system. Sadly, there seems to be no end to applications for the word deteriorate. And, the truth is at a certain age we all start deteriorating too.

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Vocabulary lists containing deteriorate

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

While convenient, these warmer conditions speed up respiration and ripening, causing fruit to soften and deteriorate more rapidly.

From Science Daily • May 23, 2026

Caleb Soto, attorney for the National Day Laborer Organizing Network, who represents many detainees, said he has watched people deteriorate week by week when he visits them.

From Los Angeles Times • May 21, 2026

“Each company faces challenges and additional risk factors, which will take time to work through—and individual names could deteriorate further,” Pietrzak said.

From Barron's • May 11, 2026

They drift when public safety, fiscal stability and economic vitality deteriorate together.

From The Wall Street Journal • May 11, 2026

A donkey stood a little way off, not stirring and yet apparently alive; at least it had not begun to deteriorate.

From "Do Androids Dream of Electric Sheep?" by Philip K. Dick

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