Source : Webster's Revised Unabridged Dictionary (1913)

Randomly \Ran"dom*ly\, adv.
   In a random manner.

Source : WordNet®

randomly
     adv : in a random manner; "the houses were randomly scattered";
           "bullets were fired into the crowd at random" [syn: {indiscriminately},
            {haphazardly}, {willy-nilly}, {arbitrarily}, {at
           random}, {every which way}]