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noun Uncommon

deterioration

dih-teer-reer-RAY-shuhn
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Deterioration (noun) means the process of becoming worse, or the resulting worse state. Example: “The report noted a steady deterioration in air quality.”

noun
1
The process of becoming worse, or the resulting worse state.
""The quantum sensors will provide highly accurate measurements that will help to detect the rate of change of the track and subsequently, any deteriorations which might lead to faults."" — , Network News: Researchers team up on navigation data system (2020)
"The Queen may be celebrating her jubilee but the Queen's English Society, which has railed against the misuse and deterioration of the English language, is to fold." — Lewis Smith (2012)
"V-Dem lists the characteristics of autocratization as deteriorations in freedom of expression, the decline of free and fair elections, and the centralization of authority." — , Can democracy survive without America? (2025)
"The report noted a steady deterioration in air quality."
"Years of damp caused serious deterioration of the walls."
"Doctors were worried about the rapid deterioration in the patient's condition overnight."

How to use deterioration

Learner’s notes

In plain EnglishThe gradual worsening of something.

Common pairings
rapid deterioration deterioration in health signs of deterioration
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Word forms

Plural
deteriorations
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Fill the gap

Can you complete this real example?

The report noted a steady _____ in air quality.

Etymology

From French détérioration, built from deteriorate + -ion.

Origin: French

impairment worsening declension decline in quality

Antonyms

Related words

Rhymes for deterioration

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Frequently asked questions

What does “deterioration” mean?
The word “deterioration” means the process of becoming worse, or the resulting worse state. In plain terms, the gradual worsening of something.
How do you pronounce “deterioration”?
“Deterioration” is pronounced dih-teer-reer-RAY-shuhn (/dəˌti.ɹi.əˈɹeɪ.ʃən/ in IPA).
How do you use “deterioration” in a sentence?
Here is “deterioration” used in a sentence: “The report noted a steady deterioration in air quality.”
What is the opposite of “deterioration”?
The opposite of “deterioration” — its antonyms — are amelioration, betterment, improval and improvement.
What part of speech is “deterioration”?
“Deterioration” is a noun.
Where does the word “deterioration” come from?
The word “deterioration” comes from French. From French détérioration, built from deteriorate + -ion.
Is “deterioration” a common word?
“Deterioration” is an uncommon word in modern English.

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