(adv.) With intermissions; in an intermittent manner; intermittingly.

at intervals at irregular intervals at random at regular intervals at stated times brokenly by catches by fits by jerks by skips by snatches capriciously constantly desultorily disconnectedly discontinuously eccentrically erratically every so often fitfully haltingly haphazardly here and there in snatches in spots inconstantly infrequently irregularly jerkily like clockwork lurchingly methodically nonuniformly occasionally off and on patchily per saltum punctually randomly regularly roughly skippingly spasmodically sporadically spottily steadily systematically uncertainly unevenly uniformly unmethodically unpredictably unrhythmically unsteadily unsystematically variably whimsically willy-nilly wobblingly