occasionally

Now and then; from time to time.

From time to time, as occasion demands or opportunity offers; at irregular intervals; on occasion.

Sometimes; at times.

Casually; accidentally; at random; on some special occasion.

In an occasional manner; on occasion; at times, as convenience requires or opportunity offers; not regularly.

From time to time; now and then; once in a while; irregularly.

now and then or here and there