That term was used in the late 1960's to describe relentless, almost daily, fighting across the Suez Canal between Israel and Egypt, a decade before they signed a peace treaty.
Ms Ambiga has become the target of what she describes as "relentless attacks", including death threats.
In a statement entitled Care Cases: The Looming Crisis, Munby describes a "relentless" rise that is stretching the family court system to breaking point, not to mention the care system's finances – the cost of looking after a child in care is estimated at £35,000 per year.
And "beastly" is an appropriate word to describe the relentless marathon of the hearings.
Just when SXSW fatigue threatened, I turned to music best described as relentless, with pounding, insistent, unstoppable beats running through songs from start to finish.
Her conversational style can best be described as relentless, and her passions, expressed in long recitations, can exhaust the most earnest listener.
Videos posted on the internet, as well as the testimonies of those in the city, described a relentless and indiscriminate attack.
The spring 2012 retail report of the Real Estate Board of New York described "the relentless ground-floor asking rent increases for retail space on Lower Fifth Avenue between 42nd and 49th Streets" as "one of the most important developments in the Manhattan retail market".
Leaders of key NHS organisations have demanded an end to what they describe as relentless criticism of the service which exaggerates the extent of poor care and sees GPs and hospital doctors "unfairly bashed" for problems beyond their control.
