WordWeb Online

1. Unrelatedness by virtue of falling outside the matter at hand
    
2. The state of not forming an essential or vital part.
   "A listening to Ginsberg's own steady rendition of this poem on The Beat Generation audio recordings points out the extraneousness of the theatrical trappings, which go so far as to drown out the words of the poem.";
   - extraneity

Type of: excess, excessiveness, inordinateness, unrelatedness