The conviction of the truth of some doctrine which is the result of a voluntary act of will. According to fideists who happen to be believers in the same doctrine this act may be meritorious (and refusal to make it may be a fault or even a sin ); according to others it may in fact be just as sinful to ride roughshod over the deliverance of reason (itself a divine gift), when that commands us to suspend judgement.
Philosophy dictionary. Academic. 2011.