Source : Webster's Revised Unabridged Dictionary (1913)

Faulty \Fault"y\, a.
   1. Containing faults, blemishes, or defects; imperfect; not
      fit for the use intended.

            Created once So goodly and erect, though faulty
            since.                                --Milton.

   2. Guilty of a fault, or of faults; hence, blamable; worthy
      of censure. --Shak.

            The king doth speak . . . as one which is faulty.
                                                  --2 Sam. xiv.
                                                  13.

Source : WordNet®

faulty
     adj 1: characterized by errors; "he submitted a faulty report"
     2: having a defect; "I returned the appliance because it was
        defective" [syn: {defective}]
     [also: {faultiest}, {faultier}]