Here's what rhymes with pendiums.
compendiums Words that almost rhyme with pendiums
bienniums areas burials perennials aerials biennials millenniums prosceniums triennials decennials aquariums terrestrials hairpieces honorariums centennials reburials quadrenniums vivariums sanitariums poinsettias wistarias planetariums bicentennials conventicles antimalarials centrepieces sesquicentennials extraterrestrials