Yoon rhymes with:
bethune, heun, hewn, immune, impugn, keune, mccuen, mccune, mckune, picayune, terhune, viromune, xiaoyun
Yoon sounds like:
yahn, yam, yamaha, yamane, yamani, yamin, yan, yaney, yani, yanni, yannone, yano, yanomami, yaohan, yaun, yawn, yeaman, yemen, yemeni, yen, yene, yeoman, yim, yin, yohn, yom, yon, yona, yonan, yoneyama, youman, youn, younan, yuan, yuen, yum, yuma, yummy, yun