adverb
often; frequently; now and then
Describes an action that happens repeatedly at short intervals, but not constantly. It can range from 'often' to 'occasionally' depending on context, but always implies a certain regularity.
彼はちょくちょくこの店に来る。
He comes to this shop quite often.
最近、ちょくちょく雨
It's been raining on and off lately, hasn't it?