obsolesce /-lesˈ/ intransitive verb

To be in the process of going out of use

obsolescˈence noun

obˈsolete /-lēt/ adjective

1. Gone out of use
2. Antiquated
3. No longer functional or fully developed

To cause to be or become obsolete

obˈsoletely adverb

obˈsoleteness noun

obsolēˈtion noun (rare)

obˈsolētism noun

planned obsolescence

1. The deterioration or the going out of date of a product according to a prearranged plan, usu involving its replacement
2. The deliberate inclusion in a product, eg a car, of features that lead to deterioration or out-of-dateness before the end of its useful life, to ensure future sales