Open English Wordnet
Adverbs
(r)randomly, indiscriminately, haphazardly, willy-nilly, arbitrarily, at random, every which wayin a random manner“the houses were randomly scattered”, “bullets were fired into the crowd at random”
(r)haphazard, haphazardlywithout care; in a slapdash manner“the Prime Minister was wearing a grey suit and a white shirt with a soft collar, but his neck had become thinner and the collar stood away from it as if it had been bought haphazard”