Semitism rhymes with:
diamagnetism, elitism, favoritism, absolutism, astigmatism, autism, conservatism, corporatism, despotism, diamagnetism, dogmatism, egotism, electromagnetism, elitism, ergotism, favoritism, ferromagnetism, helotism, hypnotism, leftism, magnetism, nepotism, patriotism, pragmatism, protestantism, rheumatism, separatism, statism, stigmatism
Semitism sounds like:
smidgen, smithson, smithsonian, somatogen, soundscan, swendsen