Sephlon rhymes with:
decathlon, delaune, absecon, acetosyringone, alteon, bergeron, calgon, crampon, decathlon, delaune, devaughn, doggone, einon, haton, incheon, inchon, jumbotron, kirwan, lieson, malathion, mouton, papon, ptyon, recon, rubicon, savion, savon, scaleatron, styron, suon, teason
Sephlon sounds like:
sabalan, sablan, schieffelin, scopolamine, shevlin, shovlin, sjoblom, sobelman, spallone, speelman, spellman, spelman, spielman, spielmann, spillane, spillman, spilman, splain, splaine, splawn, spleen, sublime