Synonyms for frequently

often, regularly, usually, commonly, habitually, generally, customarily, ordinarily, many times, in many instances, repeatedly, again and again, over and over, time after time, time and again, recurrently, many a time, continually, constantly, not infrequently, often enough, more often than not, chronically, perpetually, persistently, successively, periodically, every now and then, intermittently, spasmodically, at times, oftentimes, oft, a lot, every time one turns around*, more times than you can shake a stick at*; see also regularly 1, 2.

Antonyms seldom*, infrequently, rarely.