Words that almost rhyme with decessum

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

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