Honorarium rhymes with:
aquarium, barium, herbarium, merriam, planetarium, aquarium, atrium, auditorium, bacterium, barium, crematorium, delirium, deuterium, disequilibrium, emporium, equilibrium, herbarium, merriam, miriam, moratorium, myriam, mysterium, opprobrium, planetarium, tellurium, thorium, yttrium
Honorarium sounds like:
hammerman, hanrahan, hinerman, homerun