OCCASIONALLY
at times
sometimes; occasionally.I feel quite sad at times.At times, I wish I had never come here.
at times
occasionally.We have pizza from time to time.From time to time, a visitor comes to our door.
on and off and off and on
occasionally; erratically; now and again. (Reversible.)I feel better off and on, but I'm not well yet.He only came to class on and off.
on occasion
occasionally.We go out for dinner on occasion.I enjoy going to a movie on occasion.