at haphazard, at intervals, at irregular intervals, at random, brokenly, by catches, by chance, by fits, by jerks, by snatches, capriciously, carelessly, chaotically, desultorily, disconnectedly, discontinuously, eccentrically, erratically, every which way, fitfully, flutteringly, haltingly, haphazardly, helter-skelter, higgledy-piggledy, hit or miss, impulsively, in snatches, in spots, inconsistently, inconstantly, indiscriminately, intermittently, irregularly, jerkily, lurchingly, nonuniformly, off and on, patchily, promiscuously, quakingly, quaveringly, quiveringly, randomly, roughly, saltatorily, shakily, shudderingly, sloppily, sporadically, spottily, tremblingly, tremulously, uncertainly, unequally, unevenly, unmethodically, unpredictably, unrhythmically, unsteadily, unsystematically, ununiformly, variably, waveringly, whimsically, wobblingly