Akademik

believability
noun
the quality of being believable or trustworthy
Syn: ↑credibility, ↑credibleness
Ant: ↑incredibility (for: ↑credibility)
Derivationally related forms: ↑believable, ↑credible (for: ↑credibleness), ↑credible (for: ↑credibility)
Hypernyms: ↑quality
Hyponyms:
authenticity, ↑genuineness, ↑legitimacy, ↑cogency, ↑validity, ↑rigor, ↑rigour, ↑plausibility, ↑plausibleness, ↑street credibility, ↑street cred, ↑cred
Attrubites: ↑credible, ↑believable, ↑incredible, ↑unbelievable

* * *

\\bə̇ˌlēvəˈbiləd.ē, bē-\ noun (-es)
: the quality or state of being believable

advertising exists basically on a foundation of believability — C.B.Larrabee

* * *

believability
(bɪˌliːvəˈbɪlɪtɪ)
[f. next: see -bility.]
Capability of being believed, credibility.
Mill Logic (ed.6) I. 305.

Useful english dictionary. 2012.