Kleffner rhymes with:
geffner, haeffner, haefner, heffner, hefner, reffner, duffner, dufner, geffner, haeffner, haefner, haffner, hafner, heafner, heefner, heffner, hefner, heifner, hoeffner, hoepfner, hoffner, kuffner, laughner, offner, pfiffner, reffner, ruffner, schaffner, schiffner, shaffner, shoffner, shofner