Often

again and again, constantly, continually, frequently, hourly, much, oft, oftentimes ( ofttimes), over and over, repeatedly

always, consistently, continuingly, continuously, night and day, perpetually, unceasingly, uninterruptedly; afresh, again, anew; commonly, habitually, ordinarily, regularly, routinely; intermittently, periodically, recurrently; generally, usually

now, now and then, occasionally, sometimes, sporadically; ne'er, never; once