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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.

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

From The Wall Street Journal • May 11, 2026

"We lived near the Wye for 20 years, and saw it deteriorate, but we didn't imagine that river pollution would affect us so much."

From BBC • Apr. 26, 2026

KGM’s extensive use of these products, as she and her lawyers argued, caused her mental health to deteriorate.

From Salon • Apr. 16, 2026

But if the economic activity starts to deteriorate, the Fed will tilt toward holding rates steady for longer, he added.

From MarketWatch • Apr. 5, 2026

When weariness sets in, a writer’s ability to behold an entire branch of the tree can deteriorate.

From "The Sense of Style" by Steven Pinker