Osullivan rhymes with:
gallivan, quinlivan, gallivan, quinlivan, alvan, beavan, beaven, beethoven, bevan, beven, biven, bliven, boven, breakeven, brookhaven, calvin, cavan, caven, chovan, cleven, coven, craven, criven, dehaven, delavan, devan, devon, diven, donovan, donvan, driven, eindhoven, eleven, enliven, erven, evan, evon, fairhaven, forgiven, gallivan, galven, gavan, gaven, girvan, girven, givan, given, glavan, goloven, govan, graven, handwoven, haven, heaven, hillhaven, hooven, hovan, hoven, interwoven, ivan, ivane, iven, jovan, kavan, kelvan, kelven, kelvin, kevan, keven, kievan, kirven, kleven, koven, lavan, laven, leaven, levan, leven, liven, lovan, loven, maven, mcgavin, mcgrevin, mcnevin, morven, new-haven, niven, o'donovan, o'sullivan, odonovan, oven, pavon, previn, proven, quinlivan, radavan, ravan, raven, riven, roven, ruthven, sarajevan, servan, seven, shaven, slaven, sleven, stephen, steven, striven, sullivan, sylvan, uneven, unforgiven, unproven, unshaven, vandeven, vanleuven, vanluven, verhoeven, villanovan, walraven, wolven, woven, yerevan