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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

  • deterioration noun
  • deteriorative adjective
  • undeteriorated adjective
  • undeteriorative adjective

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.

Keep Reading on Vocabulary.com

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.

Assuming conditions don’t deteriorate further, “these supply responses reinforce our conviction of a broad-based recovery in upstream markets in 2027 and 2028,” Le Peuch said.

From Barron's • Apr. 24, 2026

The U.S. stock market’s prospects continue to deteriorate, according to the gold-platinum ratio — a relatively obscure indicator with an impressive track record predicting the stock market’s 12-month return.

From MarketWatch • Apr. 17, 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

Some economists say economic conditions could deteriorate if the nations are still fighting in June or early July.

From The Wall Street Journal • Apr. 3, 2026

But the situation with law enforcement continued to deteriorate.

From "Killers of the Flower Moon" by David Grann