incomprehension n 1: an inability to understand; "his incomprehension of the consequences" [ant: {comprehension}]
Incomprehension \In*com`pre*hen"sion\, n. Lack of comprehension or understanding. "These mazes and incomprehensions." --Bacon. [1913 Webster]
21 Moby Thesaurus words for "incomprehension": blindness, deafness, dim-sightedness, imperceptiveness, impercipience, incognizance, insensibility, mindlessness, nearsightedness, nonrealization, nonrecognition, nonunderstanding, purblindness, shortsightedness, unapprehendingness, unawareness, unconsciousness, undiscerningness, unmindfulness, unperceptiveness, unwittingness