Ison rhymes with:
bissen, bisson, brison, brisson, christen, dishon, dison, edmisten, frison, glisson, glisten, grisson, kissane, listen, nissen, rechristen, rison, sison, sisson, thissen, tison, zisson
Ison sounds like:
iacona, iacono, iason, icahn, ice-nine, iceman, icon, igene, igman, ignominy, igon, iguana, ikon, isaacson, isackson, isaksen, isakson, ischemia, iseman, isham, ishikawajima, ishman, ism, isom, isoxicam, issam, ixion, izumi