Synonyms and related words :
agnosticism, blankmindedness, callowness, empty-headedness, greenhornism, greenness, hiatus of learning, ignorance, ignorantism, ignorantness, inanity, inexperience, innocence, know-nothingism, knowledge-gap, lack of information, obscurantism, rawness, simpleness, simplicity, tabula rasa, unacquaintance, unacquaintedness, unawareness, unfamiliarity, unintelligence, unknowing, unknowingness, unripeness, vacuity, vacuousness