unenlightening

unenlightening (http://definr.com/unenlightening)

     adj 1: not tending to inform or clarify; "an unenlightening
            comment" [syn: uninformative, uninstructive] [ant:
             enlightening]
     2: not edifying [syn: unedifying] [ant: edifying]
     3: failing to enlighten or clarify; "an unilluminating report"
        [syn: unilluminating] [ant: illuminating]