Words that almost rhyme with excellenciam

mention tension pension lengthen gentian attention extension retention strengthen ascension convention dimension invention prevention contention suspension detention dissension distension pretension declension apprehension hypertension reinvention comprehension condescension reprehension misapprehension incomprehension

rectum venom denim plenum jetsam phenom seldom welcome septum harem vellum bedlam velum webcam spectrum momentum referendum cerebellum addendum flagellum plectrum envenom unwelcome interregnum bubblegum antebellum antiserum