Words that almost rhyme with carbacephem

seven heaven session cession possession lesson lessen resin leaven freshen profession eleven accession procession obsession recession secession depression aggression compression discretion succession concession confession oppression regression repression suppression intercession digression expression impression progression dispossession concretion transgression decompression indiscretion retrogression

venom harem vellum velum seldom septum denim welcome rectum addendum plenum bedlam spectrum cerebellum antiserum flagellum momentum referendum unwelcome antebellum interregnum