How to pronounce “unyielding”(noun) in English

generators, FM radio, remote control, robots, spark plugs, fluorescent lights and giant-ass machines that shoot enormous, brain-frying lightning bolts all over the place. He hadan unyielding, steel-trap photographic memory and an innate ability to visualize even the most complex pieces of machinery; the guy did advance calculus and physics equationsin his head, memorized entire books at a time, and successfully pulled off scientific experiments that modern-day technology still can't replicate. For instance, in 2007 a group of lesser geniuses