what do you mean by deteriorate?

To make worse or To grow worse

deterioate means that what your performance was earlier you have now performed mor badly than before

Deteriorate means,

become or make worse : to become or make something worse in quality, value, or strength.

Hope that helps.

Cheers!!!!!!!!

Deteriorate means to become worse in quality,value or health.

 your photo is nice.

Deteriorated means -become or make worse: to become or make something worse in quality, value, or strength . Decaying or worsening give the same meaning.

1. de·te·ri·o·rate 

   
   

   Verb Become progressively worse.

   Synonyms worsen - spoil - impair - decay - debase - degenerate