Source : Webster's Revised Unabridged Dictionary (1913)

Reverberative \Re*ver"ber*a*tive\, a.
   Of the nature of reverberation; tending to reverberate;
   reflective.

         This reverberative influence is that which we have
         intended above, as the influence of the mass upon its
         centers.                                 --I. Taylor.

Source : WordNet®

reverberative
     adj : characterized by reverberation; "a resonant voice"; "hear
           the rolling thunder" [syn: {resonant}, {resonating}, {resounding},
            {reverberating}, {rolling}]