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

Presbyopia is the gradual deterioration of your eyes' ability to focus on close objects. —Janet Loehrke, USA Today, 23 Sep. 2025

Three others who died after release due to health deterioration caused by prison conditions. —Antonio María Delgado, Miami Herald, 23 Sep. 2025

This strategy has not been paying out for the company, which complained about the further deterioration of their margins between July and September. —Giulia Carbonaro, MSNBC Newsweek, 23 Sep. 2025

De Sanctis was armed with Q-tips, glue, isopropyl alcohol, lemon oil, and eucalyptus oil (handy for removing any adhesive residue from the surface of a film); a separate room, devoted to slowing or reversing chemical deterioration, gave me an odd sense of having wandered into a witch’s kitchen. —Anthony Lane, New Yorker, 22 Sep. 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