discontinuously

aimlessly ambiguously brokenly chaotically confusedly disconnectedly disjointedly drunkenly frantically frenziedly illegibly illogically incomprehensibly indistinctly ineptly randomly sloppily spasmodically uncertainly unclearly unintelligibly unrecognizably unsystematically wildly

at intervals at times every now and then every once in a while every so often from time to time hardly infrequently intermittently irregularly now and again now and then occasionally off and on on occasion once in a blue moon once in a while periodically sometimes sporadically

infrequently occasionally periodically

again alternately betimes cyclically sometimes