periodically

adv

1. (not-comparable)In a manner that is regular or periodic.

   “Put two encasings on a mattress if one must be removed periodically for cleaning.”

2. (not-comparable)intermittently or recurrently.

   “The announcement comes amid mounting pressure on university administrators to rein in pro-Palestinian demonstrations, which have erupted periodically on college campuses across the country over the past year and led to the arrest of hundreds of demonstrators.”