off and on

/AO1 F AE1 N D AA1 N/
adverb
  1. 1

    Intermittently.

    โ€œWith so much worry, I only slept off and on last night.โ€

  2. 2

    On different tacks, now toward, and now away from, the land.

Synonyms

Source: https://en.wiktionary.org/wiki/off%20and%20on