variably

variably
    adv 1: with variation; in a variable manner or to a variable
           degree; "it will be variably cloudy"
    

Variably \Va"ri*a*bly\, adv.
   In a variable manner.
   [1913 Webster]
    

46 Moby Thesaurus words for "variably":
      at irregular intervals, at random, back and forth, brokenly,
      by catches, by fits, by jerks, by snatches, capriciously,
      changeably, desultorily, disconnectedly, discontinuously,
      eccentrically, erratically, fitfully, haltingly, in and out,
      in snatches, in spots, inconstantly, intermittently, irregularly,
      jerkily, lurchingly, nonuniformly, off and on, on and off,
      patchily, roughly, round and round, spasmodically, sporadically,
      spottily, to and fro, uncertainly, unevenly, unmethodically,
      unpredictably, unrhythmically, unsteadfastly, unsteadily,
      unsystematically, waveringly, whimsically, wobblingly