1. (n.) The condition of being ignorant; the want of knowledge in general, or in relation to a particular subject; the state of being uneducated or uninformed.

2. (n.) A willful neglect or refusal to acquire knowledge which one may acquire and it is his duty to have.

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