#irrelevance  the lack of a relation of something to the matter at hand
  exclusion:  relevance
  supertype:  unconnectedness  the lack of a connection between things
  subtype:  inapplicability  irrelevance by virtue of being inapplicable to the matter at hand
  subtype:  immateriality  complete irrelevance requiring no further consideration

No statement uses or specializes irrelevance; click here to add one.