Fredrick rhymes with:
frederic, frederick, fredric, fredrich, frederic, frederick, fredric, fredrich, cedric, dedrick, edric, fedrick, frederic, frederick, fredric, fredrich, headrick, hedrich, hedrick, pedrick, shedrick, tedrick
Fredrick sounds like:
fortier's, fortress, fortresses, forwarders, frederic, frederica, frederick, frederick's, fredericka, fredericks, frederico, frederika, fredric, fredrich, fredricks, fridrich, friederich, friederike, friedrich, friedrichs, friedrick, furthers