(adv.) In an irregular manner.

at haphazard at intervals at irregular intervals at random brokenly by catches by chance by fits by jerks by snatches capriciously carelessly chaotically choppily desultorily disconnectedly discontinuously eccentrically erratically every which way fitfully haltingly haphazardly helter-skelter higgledy-piggledy hit or miss impulsively in snatches in spots in the rough inconsistently inconstantly indiscriminately infrequently intermittently jaggedly jerkily lurchingly nonuniformly off and on on patchily promiscuously raggedly randomly rough roughly sloppily spasmodically sporadically spottily uncertainly uncommonly unequally unevenly unmethodically unpredictably unrhythmically unsteadily unsystematically ununiformly variably whimsically wobblingly