(n.) Skepticism; universal doubt.

Humism Pyrrhonism atheism blankmindedness callowness denial disbelief discredit doubt empty-headedness greenhornism greenness heresy hiatus of learning ignorance ignorantism ignorantness inability to believe inanity incredulity inexperience infidelity innocence know-nothingism knowledge-gap lack of information minimifidianism misbelief nescience nonbelief nullifidianism obscurantism rawness rejection scoffing simpleness simplicity skepticism tabula rasa unacquaintance unbelief unbelievingness unfamiliarity unintelligence unknowing unknowingness unripeness vacuity vacuousness