bokeh

Learned borrowing from Japanese 暈(ぼ)け (boke, “blur”), the nominalized form of 暈(ぼ)ける (bokeru, “to blur”). The terminal -h, absent in the romanization boke, is a pronunciation guide so that it is not pronounced as /boʊk/ as it would be under standard English orthography. Contrast karate and karaoke, which have undergone sound changes. The term has been used since at least 1996, with the spelling bokeh introduced by editor Mike Johnston in the March–April 1997 issue of Photo Techniques magazine, Johnston writing “it is properly pronounced with bo as in bone and ke as in Kenneth, with equal stress on either syllable”.

来源：wiktionary