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