(adv) now and then or here and there, Syn. at times, once in a while, on occasion, from time to time, now and again, now and then, Example:he was arrogant and occasionally callous; open areas are only occasionally interrupted by clumps of trees; they visit New York on occasion; now and again she would take her favorite book from the shelf and read to us; as we drove along, the beautiful scenery now and then attracted his attention