Definition of credenciveness in US English:

credenciveness

(also credensiveness)

noun

Parapsychology
historical
  • Disposition to give credence; readiness to believe.

Origin

Mid 19th century. From credence + -ive + -ness, apparently on the model of defensiveness, offensiveness, apprehensiveness, etc.

Pronunciation

credenciveness

/krɪˈdɛnsɪvnɪs/