Here's what rhymes with opan.
ban pan tan dan dann can than man plan ran van fan span shan bran kan kann nan san gan lan began clan scan gran sedan divan rattan cyan flan japan outran saran overran journeyman bogeyman turbofan paperhanger boogeyman caravan fisherman middleman catamaran handyman anchorman minivan radioman weatherman counterman minuteman businessman nurseryman serviceman newspaperman assemblyman Words that almost rhyme with opan
dam damn jam bang pang tam tang chang dang jamb hang gang rang sang lamb cam ham ram sham yang lam lang langue nam tram dram fang yam pram spam wham prang sprang gram slang swam clam harangue slam clang cram gramme scam doorjamb glam shebang flambe exam overhang quondam boomerang buckram cofferdam scram rehang whizzbang diagram diaphragm epigram grandam telegram diazepam anagram mammogram ideogram sonogram orangutang histogram kilogram hologram milligram monogram cablegram radiogram pentagram centigram hexagram cardiogram kissogram parallelogram electrocardiogram electroencephalogram hasn