once in a while
adv1
Idiomatic Occasionally; sometimes.
- I send her a note once in a while to let her know I'm thinking of her.
- He used to drop into my chambers once in a while to smoke, and was first-rate company. When I gave a dinner there was generally a cover laid for him.1897 December (indicated as 1898), Winston Churchill, chapter I, in The Celebrity: An Episode, New York, N.Y.: The Macmillan Company; London: Macmillan & Co., Ltd., →OCLC, page 2: