How to pronounce “adulthood”(verb) in English

And what she doesn't know, and really the only saving grace of all this, is that one of her Comanche sons, the onlyone who survives to adulthood, whose name is Quanah, becomes a rather noteworthy and important person in NativeAmerican history. He spent the first half of his life being a nomadic warrior on the High Plains in Texas.