1) Credence 2) Credit 3) Creditworthiness 4) Dependability 5) Faithfulness 6) Loyalty 7) Responsibleness 8) Trustiness 
Trustworthiness is a moral value, regarded as a virtue. For example, a trustworthy person is someone in whom one can place one`s trust and rest assured that the trust shall not be betrayed. A person can `prove` their trustworthiness by fulfilling an assigned responsibility - and as an extension of that, by not letting down expectations. The res......
[n] - the trait of deserving trust and confidence
trustiness noun the trait of deserving trust and confidence