Addison rhymes with:
madison, radisson, genemedicine, jesudason, madison, medicine, radisson, acheson, allison, amason, andreassen, comparison, dickason, diocesan, eliason, eliassen, fergason, fergeson, ferguson, fergusson, furgason, genemedicine, grieveson, hannesson, higgason, iason, jesudason, jonassen, liason, liasson, madison, magnuson, magnussen, magnusson, marcussen, markuson, matheson, mathiasen, mathiason, medicine, monessen, myosin, niacin, nicoson, ottoson, oveson, purgason, radisson, rasmuson, rasmussen, rasmusson, thomason, thomassen, thomasson, tobiason, unison, vargason, venison
Addison sounds like:
adhesion, adjani, adjoin, adkison, adkisson, aitchison, aitken, atcheson, atchison, atheism, atkin, atkison, atkisson, attkisson, autism