invalidity
1. [ noun ] (logic) illogicality as a consequence of having a conclusion that does not follow from the premisses
Synonyms: invalidness
Related terms: illogicality fallaciousness
Similar spelling:   invalid
  inability
  invalidism
  infelicity
  invalidated
  invalidate
  inflict
  invalidness
  invalidator
  invalidation
  invalidating
  infallibility
  in_flight
  infliximab