Halligan rhymes with:
calligan, galligan, calligan, culligan, galligan, hooligan, milligan, mulligan, nelligan, bennigan, berrigan, branigan, brannigan, calligan, cardigan, carrigan, corrigan, culligan, donigan, dunnigan, finigan, finnigan, flanigan, flannigan, galligan, garrigan, gavigan, hanigan, hannigan, harrigan, hartigan, henigan, hennigan, hooligan, kerrigan, landrigan, lanigan, madigan, merrigan, michigan, milligan, mulligan, nelligan, obregon, rattigan, rustigan, shawinigan, shenanigan, stoffregen, swanigan
Halligan sounds like:
halcion, halcyon, halcyone, halogen, helgesen, helgeson, helicon, hellickson, hilgeman, hillesheim, hillsman, hillson, hilsman, hilson, holguin, holquin, holzman, holzmann, hooligan, huelsman, huelsmann, hulgan, hulsman