Fit"ful*ly

Fitful \Fit"ful\, a. [From 7th {Fit}.]
   Full of fits; irregularly variable; impulsive and unstable.
   [1913 Webster]

         After life's fitful fever, he sleeps well. --Shak.
   -- {Fit"ful*ly}, adv. -- {Fit"ful*ness}, n.
   [1913 Webster]

         The victorious trumpet peal
         Dies fitfully away.                      --Macaulay.
   Fithel
    

65 Moby Thesaurus words for "fitfully":
      at haphazard, at intervals, at irregular intervals, at random,
      brokenly, by catches, by chance, by fits, by jerks, by skips,
      by snatches, capriciously, carelessly, desultorily, disconnectedly,
      discontinuously, eccentrically, erratically, flutteringly,
      haltingly, haphazardly, here and there, hit or miss, in snatches,
      in spots, inconstantly, indiscriminately, infrequently,
      intermittently, irregularly, jerkily, lurchingly, nonuniformly,
      occasionally, off and on, patchily, per saltum, promiscuously,
      quakingly, quaveringly, quiveringly, randomly, roughly,
      saltatorily, shakily, shudderingly, skippingly, sloppily,
      spasmodically, sporadically, spottily, tremblingly, tremulously,
      uncertainly, unevenly, unmethodically, unpredictably,
      unrhythmically, unsteadily, unsystematically, variably, waveringly,
      whimsically, willy-nilly, wobblingly