periodically Synonyms

sporadically every now and again ever and anon episodically discontinuously cyclically routinely at intervals by fits and starts once in a while on occasion now and then every once in a while every so often on occasions on the odd occasion many times every now and then spasmodically seasonally recurrently once or twice once in a blue moon on and off off and on now and again from time to time occasionally irregularly interruptedly intermittently infrequently frequently evenly continually constantly betimes often periodic periodical at times at random systematically steadily sometimes serially rhythmically repeatedly regularly regular