sporadically

sporadically
    adv 1: in a sporadic manner; "he only works sporadically" [syn:
           {sporadically}, {periodically}]
    

Sporadically \Spo*rad"ic*al*ly\, adv.
   In a sporadic manner.
   [1913 Webster]
    

71 Moby Thesaurus words for "sporadically":
      at haphazard, at intervals, at irregular intervals, at large,
      at random, brokenly, by catches, by chance, by fits, by jerks,
      by snatches, capriciously, carelessly, chaotically, desultorily,
      diffusely, disconnectedly, discontinuously, dispersedly,
      eccentrically, erratically, every which way, everywhere, fitfully,
      haltingly, haphazardly, helter-skelter, here and there,
      higgledy-piggledy, hit or miss, impulsively, in all quarters,
      in places, in snatches, in spots, inconsistently, inconstantly,
      indiscriminately, infrequently, intermittently, irregularly,
      jerkily, lurchingly, nonuniformly, off and on, on occasion, passim,
      patchily, promiscuously, randomly, roughly, sloppily, sparsely,
      sparsim, spasmodically, spottily, throughout, uncertainly,
      uncommonly, unequally, unevenly, unmethodically, unpredictably,
      unrhythmically, unsteadily, unsystematically, ununiformly,
      variably, wherever you look, whimsically, wobblingly