Sullivan rhymes with:
o'sullivan, o'sullivan, delavan, goloven, o'sullivan, dehaven, delavan, donovan, goloven, o'donovan, o'sullivan, odonovan, radavan, vandeven, yerevan
Sullivan sounds like:
salvina, salvino, schlobohm, sclafani, silvana, slaven, slavin, slavonia, slepian, sleven, slevin, slip-on, slovene, slovenia, slovenian, slovonia, sylvain, sylvan, sylvana, sylvania