deterioration

noun

de·​te·​ri·​o·​ra·​tion di-ˌtir-ē-ə-ˈrā-shən 

dē-

: the action or process of becoming impaired or inferior in quality, functioning, or condition : the state of having deteriorated

rust deterioration

the deterioration of academic standards

Synonyms

• weakening
• decay
• decline
• decaying

Choose the Right Synonym for deterioration

deterioration, degeneration, decadence, decline mean the falling from a higher to a lower level in quality, character, or vitality.

deterioration implies generally the impairment of value or usefulness.

the deterioration of the house through neglect

degeneration stresses physical, intellectual, or especially moral retrogression.

the degeneration of their youthful idealism into cynicism

decadence presupposes a reaching and passing the peak of development and implies a turn downward with a consequent loss in vitality or energy.

cited love of luxury as a sign of cultural decadence

decline differs from decadence in suggesting a more markedly downward direction and greater momentum as well as more obvious evidence of deterioration.

the meteoric decline of his career after the scandal

Examples of deterioration in a Sentence

the gradual deterioration of the weather

a deterioration of academic standards

Recent Examples on the Web

The causes of the deterioration are different in each case, and some of Washington’s grievances against Brazil, India, and South Africa—global swing states that will help dictate which country leads the world—are legitimate. —Richard Fontaine, Foreign Affairs, 27 Oct. 2025

According to the National Institute of Neurological Disorders and Stroke, CMT causes a range of sensory and motor symptoms, including numbness, tingling, pain, muscle weakness and atrophy — deterioration in cells, tissues, and organs. —Diana Leyva, Nashville Tennessean, 24 Oct. 2025

This isn’t to say writer and director Mary Bronstein’s film, about the agonizing deterioration of a woman whose life is falling down around her in near-apocalyptic fashion, isn’t worth watching. —Bill Goodykoontz, AZCentral.com, 24 Oct. 2025

Hot water can be rough on fabrics and reduce the quality of your bedding over time, causing shrinking, fading, and deterioration of the fabric. —Karen Brewer Grossman, Southern Living, 23 Oct. 2025

Word History

Etymology

see deteriorate

First Known Use

circa 1658, in the meaning defined above

Rhymes for deterioration

• acclimatisation
• acclimatization
• acidification
• actualization
• annualization
• autocorrelation
• autoregulation
• beatification
• beneficiation
• biodegradation
• biotransformation
• bureaucratization

Medical Definition

deterioration

noun

de·​te·​ri·​o·​ra·​tion di-ˌtir-ē-ə-ˈrā-shən 

: the action or process of deteriorating : the state of having deteriorated

personality deterioration

neurological deterioration