The phrase "an endless circle" is correct and usable in written English.
It can be used to describe a situation or concept that is repetitive and has no clear beginning or end.
Example: "The debate over the issue seemed to go in an endless circle, with no resolution in sight."
Alternatives: "a never-ending loop" or "a perpetual cycle".
A group of firefighters in Brooklyn retrace an endless circle of lost possibilities.
Will there be textiles that never die in an endless circle of old polyester clothing recycled back into new polyester clothing?
Installed around the museum's rotunda, the exhibition seems to have no beginning and no end; one could just keep going in an endless circle of dishes.
'No, we're just having lunch.'" Whatever Frost's contribution, this book of quotations – like all the others I know – seems to have been largely sourced from other books of quotations, in an endless circle.
It's a wheel, an endless circle, designed to delight and enthuse and distract.
You see, when the phone was first launched, Google was directing people to either T-Mobile (Google's carrier partner) or HTC (the device manufacturer) depending on the problem, which could lead to an endless circle of hold times and few results.
And AC/DC's Angus Young is an exemplary choice of cover star – especially following so hard on the road-calloused heels of Metallica (anyone would think these people were taking metal seriously), and with Mojo apparently stuck on an endless circle-line trip from the Beatles to the Clash and back again.
The striped bass follows an Atlantic needlefish, which tails a herring in an endless circling that fixes visitors beside the glass at the New Jersey State Aquarium.
He has jumped into the shower ahead of his wake-up calls, cut back on his telephone chats with an endless circles of advisers and, mostly, delivered the new lines in his stripped-down stump speech with determination.
For Miller, no point of origin exists even within the novel: " 'Lord Jim' is like a dictionary in which the entry under one word refers the reader to another word which refers him to another and then back to the first word again, in an endless circling".
It was barely tolerable to keep opening to it, and it seemed I just kept spiraling, around and around, inside a seemingly endless circle of pain.
