1. (n.) The state of being illiterate, or uneducated; want of learning, or knowledge; ignorance; specifically, inability to read and write; as, the illiteracy shown by the last census.

2. (n.) An instance of ignorance; a literary blunder.

Urdummheit amateurishness amateurism benightedness brainlessness callowness disaccustomedness empty-headedness foolishness greenness illiteracy immaturity incapacity ineptitude inexperience innocence irrationality know-nothingism lackbrainedness lackwittedness low IQ mental weakness mindlessness naivete nescience newness to philistinism primal stupidity rawness reasonlessness senselessness simpleness simplicity slackmindedness slackwittedness unaccustomedness unacquaintance unacquaintedness unawareness unconsciousness unconversance uncouthness uncultivation unenlightenment unexperiencedness unfamiliarity unfledgedness unhabituatedness unintellectuality unintelligence unknowingness unpracticedness unprofessionalism unprofessionalness unripeness unsophistication unwisdom unwiseness unwontedness witlessness