(n.) Want of comprehension or understanding.
Thesaurus Entries
blindness, deafness, dim-sightedness, imperceptiveness, impercipience, incognizance, insensibility, mindlessness, nearsightedness, nonrealization, nonrecognition, nonunderstanding, purblindness, shortsightedness, unapprehendingness, unawareness, unconsciousness, undiscerningness, unmindfulness, unperceptiveness, unwittingness
