Opperman rhymes with:
copperman, oppermann, copperman, fesperman, hooperman, kipperman, kuperman, newspapermen, oppermann, pepperman, superman, tepperman, upperman, vipperman
Opperman sounds like:
o'beirne, o'brian, o'brien, o'bryan, o'byrne, obeirne, oberman, oberon, obrian, obrien, obryan, obyrne, offerman, offermann, operan, oppermann, ovarian, overman, overran, overrun