1. Get the better of
   "the goal was to outgun the competition";
   - outdo, outflank, trump, best
    
2. Have more or better guns (or other weapons) than
   "The police were outgunned by the heavily armed criminals"

Derived forms: outgunned, outgunning, outguns

Type of: beat, beat out, crush, shell [US], trounce, vanquish