Cardigan rhymes with:
madigan, bennigan, berrigan, branigan, brannigan, calligan, carrigan, corrigan, culligan, donigan, dunnigan, finigan, finnigan, flanigan, flannigan, galligan, garrigan, gavigan, halligan, hanigan, hannigan, harrigan, hartigan, henigan, hennigan, hooligan, kerrigan, landrigan, lanigan, madigan, merrigan, michigan, milligan, mulligan, nelligan, obregon, rattigan, rustigan, shawinigan, shenanigan, stoffregen, swanigan
Cardigan sounds like:
cardizem, cartagena, cartesian, carthaginian, cordesman, cortisone, cretchen, criticism