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