Source : WordNet®

dulled
     adj 1: having lost or been caused to lose interest because of
            overexposure; "the mind of the audience is becoming
            dulled"; "the benumbed intellectual faculties can no
            longer respond" [syn: {benumbed}]
     2: made dull or blunt [syn: {blunted}]
     3: deprived of color; "colors dulled by too much sun"; "grayed
        with the dust of the road" [syn: {grayed}]