(adv.) Not frequently; rarely.

at infrequent intervals at intervals brokenly by catches by fits by jerks by skips by snatches disconnectedly discontinuously exceptionally exiguously fitfully haphazardly hardly hardly ever here and there in places in spots intermittently irregularly little meagerly not often now and then occasionally on occasion per saltum piddlingly randomly rarely scantily scarcely scarcely ever scrimpily seldom skimpily skippingly sparsely sparsim sporadically spottily stingily uncommonly unfrequently unoften very seldom willy-nilly