Here's what rhymes with effeetum.
teatime arboretum Words that almost rhyme with effeetum
phaeton freedom beaten sweeten wheaten neaten didn region deepen legion needn cheapen cretin steepen overeaten unbeaten collegian rerum diesem threesome fiefdom sheikdom sheikhdom hominum cerium chiefdom cilium museum labium capsicum samarium solarium mausoleum imperium encomium trapezium coliseum francium protactinium