Main Entry: de·te·ri·o·rate

Pronunciation: \di-ˈtir-ē-ə-ˌrāt\

Function: intransitive verb

Inflected Form(s): de·te·ri·o·rat·ed; de·te·ri·o·rat·ing

: to become impaired in quality, functioning, or condition : degenerate <her health deteriorated> <deteriorating vision>