simple past tense and past participle of deteriorate

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

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

getting worse

present participle of deteriorate

Third-person singular simple present indicative form of deteriorate

plural of deterioration

Causing deterioration.

A worse quality or state; inferiority.

plural of deteriorator