Here's what rhymes with conceffum.
Words that almost rhyme with conceffum
seven heaven session concession confession cession lesson accession lessen obsession resin leaven freshen possession aggression compression eleven succession oppression recession secession concretion impression profession procession regression suppression intercession expression depression discretion progression repression transgression decompression digression indiscretion dispossession retrogression venom harem vellum velum seldom septum denim welcome rectum unwelcome addendum plenum bedlam spectrum momentum cerebellum antiserum flagellum referendum antebellum interregnum