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 of deterioration

• 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

Artificial intelligence has progressed dramatically, extracting signal from imaging, synthesizing longitudinal clinical records, anticipating deterioration, and assisting in clinical decisions at scale. —Celina Yong, STAT, 16 Apr. 2026

Iran’s deterioration of 12 positions — from 16th most miserable in 2024 to 4th in 2025 — places Iran in the world’s top five most miserable economies for the first time since the HAMI began its modern coverage. —Steve H. Hanke, Fortune, 16 Apr. 2026

These are but a few examples of how his deterioration is beginning to affect those looking to him for guidance. —Rosy Cordero, Deadline, 16 Apr. 2026

Still, any miscalculation or direct confrontation at sea could tip the diplomatic posturing into rapid deterioration and risk jeopardizing the fragile stability in the detente between Washington and Beijing. —Anniek Bao, CNBC, 15 Apr. 2026

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