eradicate

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

     v 1: kill in large numbers; "the plague wiped out an entire
          population" [syn: eliminate, annihilate, extinguish,
           wipe out, decimate, carry off]
     2: destroy completely, as if down to the roots; "the vestiges
        of political democracy were soon uprooted" [syn: uproot,
         extirpate, exterminate]