(adv.) In an inexplicable manner.

anarchically at haphazard at hazard at random bootlessly casually chaotically confusedly dispersedly dysteleologically fecklessly fruitlessly futilely haphazardly indiscriminately inexplicably insignificantly meaninglessly needlessly nonconnotatively nondenotatively nonsensically planlessly pointlessly promiscuously purposelessly randomly riotously senselessly stochastically to little purpose to no purpose turbulently unaccountably unmeaningly unnecessarily unsignificantly uselessly vaguely vainly wanderingly