'Credibility' definitions:

Definition of 'credibility'

(from WordNet)
noun
The quality of being believable or trustworthy [syn: credibility, credibleness, believability] [ant: incredibility, incredibleness]

Definition of 'Credibility'

From: GCIDE
  • Credibility \Cred`i*bil"i*ty\ (kr[e^]d`[i^]*b[i^]l"[i^]*t[y^]), n. [Cf. F. cr['e]dibilit['e].] The quality of being credible; credibleness; as, the credibility of facts; the credibility of witnesses. [1913 Webster]

Synonyms of 'credibility'

From: Moby Thesaurus