Autism rhymes with:
absolutism, astigmatism, conservatism, corporatism, despotism, diamagnetism, dogmatism, egotism, electromagnetism, elitism, ergotism, favoritism, ferromagnetism, helotism, hypnotism, leftism, magnetism, nepotism, patriotism, pragmatism, protestantism, rheumatism, semitism, separatism, statism, stigmatism
Autism sounds like:
addison, adhesion, adjani, adjoin, adkison, adkisson, aitchison, aitken, atcheson, atchison, atheism, atkin, atkison, atkisson, attkisson