'Incredibility' definitions:

Definition of 'incredibility'

From: WordNet
noun
The quality of being incredible [syn: incredibility, incredibleness] [ant: believability, credibility, credibleness]

Definition of 'Incredibility'

From: GCIDE
  • Incredibility \In*cred`i*bil"i*ty\, n. [L. incredibilitas: cf. F. incr['e]dibilit['e].] [1913 Webster]
  • 1. The quality or state of being incredible; incredibleness. --Dryden. [1913 Webster]
  • 2. That which is incredible. --Johnson. [1913 Webster]