every so often

adv

1. Occasionally; intermittently; irregularly; now and then; once in a while.

   “Check on the houseplants every so often to see if they need watering.”

   “But Raven knows where he's going. Occasionally, he reaches out, grabs her hand, but he doesn't yank her around even though she's going a lot slower than he is. Every so often, he looks back at her with a grin, like, I could hurt you, but I won't.”