Risdon rhymes with:
risden, risden, baisden, basden, elsdon, housden, lumsden, marsden, marsdon, masden, ramsden, risden, wasden
Risdon sounds like:
ragtime, reaction, recitation, recoton, rectum, rejection, requisition, restaino, restitution, reston, resuscitation, ricadonna, richstone, richton, rigatoni, rigdon, risden, riston, rocketdyne, rosten, roston, roughton, royston, rushton, rustin, ruston