(transitive) To make worse; to make inferior in quality or value; to impair. / (intransitive) To grow worse; to be impaired in quality; to degenerate.

simple past tense and past participle of deteriorate

Third-person singular simple present indicative form of deteriorate

The process of making or growing worse, or the state of having grown worse.

getting worse

present participle of deteriorate

plural of deterioration

Causing deterioration.

A worse quality or state; inferiority.

plural of deteriorator