Duncan rhymes with:
brunken, drunken, mcjunkin, shrunken, sunken, telefunken, banken, beenken, behnken, blanken, brunken, cancun, drunken, finken, franken, goetabanken, handelsbanken, hanken, henken, kinchen, lancon, lankan, lincoln, mahnken, mcjunkin, mencken, menken, nordbanken, onken, renken, rincon, schenken, shangkun, shanken, shrunken, sunken, tankan, telefunken, vanvranken, warnken
Duncan sounds like:
damson, dancin', danskin, danson, denison, denizen, dennison, denshin, denson, dimension, dingham, dingman, dionysian, domeniconi, dominican, dominicana, donegan, dongen, dongmei, donigan, dunagan, dunegan, dungan, dungeon, dunigan, dunkin, dunkin', dunnagan, dunnigan, dunson, dyansen, dynamism, dynascan