Source : Webster's Revised Unabridged Dictionary (1913)

Disruptive \Dis*rupt"ive\, a.
   Causing, or tending to cause, disruption; caused by
   disruption; breaking through; bursting; as, the disruptive
   discharge of an electrical battery. --Nichol.

Source : WordNet®

disruptive
     adj : characterized by unrest or disorder or insubordination;
           "effects of the struggle will be violent and
           disruptive"; "riotous times"; "these troubled areas";
           "the tumultuous years of his administration"; "a
           turbulent and unruly childhood" [syn: {riotous}, {troubled},
            {tumultuous}, {turbulent}]