an essential and distinguishing attribute of something or someone

the quality of comprehensible language or thought

difficult to understand

incapable of being explained or accounted for

the quality of being impossible to investigate

the quality of writing (print or handwriting) that cannot be deciphered

incomprehensibility by virtue of being too dense to understand

incomprehensibility resulting from irrelevant information or meaningless facts or remarks

incomprehensibility resulting from obscurity of meaning