Definition of DETERIORATE
de·te·ri·o·rat·ed | de·te·ri·o·rat·ing
transitive verb: 1) to make inferior in quality or value : impair; 2) disintegrate
intransitive verb: to become impaired in quality, functioning, or condition : degenerate deteriorate> deteriorated>
-- diambil dari [http://www.merriam-webster.com/dictionary/deteriorate]
