Found 2 items, similar to invalidness.
English → English (WordNet) Definition: invalidness invalidness n : illogicality as a consequence of having a conclusion that does not follow from the premisses [syn: invalidity]
English → English (gcide) Definition: Invalidness Invalidness \In*val"id*ness\, n. Invalidity; as, the invalidness of reasoning. [1913 Webster]