on the odd occasion Antonyms

uninterruptedly time and time again time and again chronically unceasingly yearly unseldom traditionally systematically repeatedly regularly prescriptively predominantly on the whole all the time typically unfalteringly unendingly unswervingly seasonally recurrently on average oftener habitually usually by nature more often than not by and large persistently perpetually generally frequently everywhen endlessly customarily continuously continually constantly consistently commonly canonically annually historically incessantly interminably permanently periodically perennially ordinarily ofttimes