Even so, a rollback of some levies since "Liberation Day" may reduce the impact on inflation. Trump paused a large swath of so-called "reciprocal tariffs" within days of the announcement. On Monday, Trump temporarily slashed tariffs on China from 145% to 30%.

While Federal Reserve Chair Jerome Powell says "the underlying inflation picture is good," tariffs could change all that.

The inflation backdrop improved in April, with a slight annual decrease reflected in the consumer-price index based on a 2.3% yearly rate. But that doesn't necessarily give the Federal Reserve an all-clear to cut rates next month,

The reduced U.K. growth and inflation would come on reduced demand and trade diversion as the rest of the world cuts their exports to the U.S., Lombardelli said in London.

If you're waiting for the Federal Reserve to lower borrowing costs, don't hold your breath. Out of the multiple Federal Reserve officials who spoke Friday, none sounded in a big hurry to cut the central bank's benchmark interest rate.