Auditorium rhymes with:
crematorium, moratorium, crematorium, moratorium, crematorium, emporium, moratorium, aquarium, atrium, bacterium, barium, crematorium, delirium, deuterium, disequilibrium, emporium, equilibrium, herbarium, honorarium, merriam, miriam, moratorium, myriam, mysterium, opprobrium, planetarium, tellurium, thorium, yttrium
Auditorium sounds like:
aderman, adorn, adorna, adorno, adrian, adriana, adriano, adrienne, athearn, atorino, atrium, attermann, attorney, audran