In a sporadic manner.

synonym: sporadically.

Roget 138: periodically etc. adj.; at regular intervals, at stated times; at fixed established, at established periods; punctually etc. adj.. de die in diem [Lat.]; from day to day, day by day.    by turns; in turn, in rotation; alternately, every other day, off and on, ride and tie, round and round.    ... show more