Dunkin rhymes with:
dunkin', dunkin', junkin, punkin, younkin, conkin, dunkin', hankin, henkin, jenkin, junkin, mankin, minkin, patinkin, punkin, rankin, thinkin, thinkin', tonkin, younkin
Dunkin sounds like:
damson, dancin', danskin, danson, denison, denizen, dennison, denshin, denson, dimension, dingham, dingman, dionysian, domeniconi, dominican, dominicana, donegan, dongen, dongmei, donigan, dunagan, duncan, dunegan, dungan, dungeon, dunigan, dunkin', dunnagan, dunnigan, dunson, dyansen, dynamism, dynascan