Guenther rhymes with:
gunther, panther, winther, altherr, arthur, auther, author, coauthor, ether, gaither, gunther, luther, macarthur, mahathir, mathur, mcarthur, panther, port-arthur, rother, ruether, ruther, sathre, uther, walther, winterthur, winther
Guenther sounds like:
gandara, gander, ganter, gantry, gender, gendreau, genter, genther, gentry, geometry, ginder, ginter, ginther, gonder, goniometer, guenter, guinther, gunder, gundry, gunter, gunther, guntur