Worsen rhymes with:
berson, burson, businessperson, christoffersen, christophersen, gerson, herson, iversen, macpherson, mcphearson, mcpherson, merson, person, persson, pherson, searson, urson
Worsen sounds like:
wearisome, wergin, wiersema, wiersma, workin', workman, workmen, worrisome, worsham