Onnen rhymes with:
connan, connon, donnan, kannan, konen, kyllonen, lakshamanan, lehtonen, mcconnon, narayanan, sonnen, vanmaanen
Onnen sounds like:
o'hanian, o'mahoney, o'mahony, oana, oanh, oehme, oehmen, oeien, ohanian, ohioan, ohm, ohmae, ohman, ohmann, oien, oma, omaha, omahoney, omahony, oman, omani, omen, ommen, omni, omonia, on, ona, onan, onawa, one, one-way, oney, onion, onni, onno, ono, oona, owen, own, oyama, oyen