off and on
Also, on and off.
Intermittently, from time to time. For example, I read his column off and on, or We've been working on the garden all summer, on and off. [Early 1500s]
Also, off again, on again; on again, off again. Uncertain, vacillating, as in Theirs is an off again, on again relationship, or The peace talks are on again, off again. Some believe this term originally referred to minor railroad accidents, where a train went off track and then on again. [Mid-1800s]
How to use off and on in a sentence
As an example of good science-and-society policymaking, the history of fluoride may be more of a cautionary tale.
Just the hard-on before you shoot unarmed members of the public.'Babylon' Review: The Dumb Lives of Trigger-Happy Cops|Melissa Leon|January 9, 2015|DAILY BEAST
As this list shows, punishments typically run to a short-ish jail sentence and/or a moderately hefty fine.
Although the blood-spattered offices will be off-limits, staff have vowed to continue producing the magazine.
Three on-the-record stories from a family: a mother and her daughters who came from Phoenix.I Tried to Warn You About Sleazy Billionaire Jeffrey Epstein in 2003|Vicky Ward|January 7, 2015|DAILY BEAST
She also practises etching, pen-and-ink drawing, as well as crayon and water-color sketching.Women in the fine arts, from the Seventh Century B.C. to the Twentieth Century A.D.|Clara Erskine Clement
A far-off volley rumbled over the plain, and a few birds stirred uneasily among the trees.The Red Year|Louis Tracy
No law of that country must exceed in words the number of letters in their alphabet, which consists only in two-and-twenty.Gulliver's Travels|Jonathan Swift
Mr. Spurrell came down to see a horse, and we shall be very glad to have the benefit of his opinion by-and-by.
They were eaten too quickly, in long gulps of four-and-twenty hours at a time.Kipling Stories and Poems Every Child Should Know, Book II|Rudyard Kipling