The phrase "a relentless cycle of" is correct and usable in written English.
It can be used to describe an ongoing, repetitive process or situation that is difficult to escape from.
Example: "The community is trapped in a relentless cycle of poverty and unemployment."
Alternatives: "an unending loop of" or "a never-ending cycle of".
"And then to drive a relentless cycle of development and testing.
For weeks, the Syrian uprising has been shaped by a relentless cycle of resilient protest and stubborn crackdown.
A relentless cycle of news and speculation, amid an electoral landscape disrupted by the rise of numerous small parties, changed direction from one moment to the next.
As our three newbies are caught in a relentless cycle of violence and recrimination (no learning or growing here), the film descends into a pit of miserabilism.
There are even extreme itch-scratch syndromes in which sufferers fall into a relentless cycle of compulsively scratching some part of their bodies -- frequently the back of the neck -- which only makes it itch all the more.
And he marked his 83rd year with the 2007 release of his last feature film, "Before the Devil Knows You're Dead," the bleakly riveting story of two brothers (Philip Seymour Hoffman and Ethan Hawke) propelled by greed into a relentless cycle of mayhem.
She lost 15 pounds and went through bouts of listlessness, then days full of energy, then more dips in vigor, a relentless cycle as the medication and the infection worked their course.
This thought has been with me for a while as the relentless cycle of reform/transform continues to beat its drum as it reproduces sameness with little change (Hurd 1997).
It may have to raise its crisis response to a new level probably involving international experts to get ahead of the relentless cycle of bad news.(Photo credit: AFP).
It was the start of a decade-long personal journey to help Afghan women break the relentless cycle of poverty.
But PC makers are also worried that the relentless cycle of upgrades, stoked by marketing and technology, is losing steam.
