sporadic Antonyms

continual commonly found undulatory unbroken steady sequential routine repeated relentless regular recurrent recurring persistent perseverant unrelenting unremitting usual any number of at different times fairly common all too common awful lot dime a dozen 24-7 firmware nonstop around the clock unceasing uninterrupted perpetual periodic perennial continuous continuing constant commonplace common cohesive chronological changeless ceaseless bare average assiduous conventional customary daily pandemic ordinary monthly