Youn rhymes with:
byun, yun, begun, bruhn, brun, brunn, bun, bunn, byun, c1, chun, chunn, done, donne, dun, dunn, dunne, fun, gruhn, grun, gun, gunn, homerun, huhn, hun, hunn, jun, kuhne, kun, lajeune, luhn, lun, lunn, m1, mcfun, mcmunn, mun, munn, none, nuhn, nun, nunn, one, outdone, outrun, overdone, puget-1, pun, redone, rerun, run, shun, simeone, son, spun, stun, sun, thrun, thun, ton, tonne, un, undone, won, yun
Youn 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, yoon, youman, younan, yuan, yuen, yum, yuma, yummy, yun