"Relentless rise" refers to a continuous or unstoppable increase in something, like a situation, a trend, or someone's success or power. Full definition
But it still serves as a rebuke to the conventional wisdom that equates Amazon's relentless rise with the inevitable death of the physical bookstore. (epublishyourself.us)
Suddenly, families like the Strollers, not the government, are covering the overwhelming share of the relentless rise in premiums. (fortune.com)
The competing view holds that only rich, income - based credits that fully protect consumers from the relentless rise in medical expenses can prevent busting family budgets. (fortune.com)