Remission rhymes with:
academician, admission, commission, decommission, emission, fondkommission, intermission, mission, omission, permission, retransmission, submission, transmission
Remission sounds like:
ramaswami, rangoon, rankin, rankine, ransom, ransome, ranson, ransone, remsen, remson, rencen, renison, renken, rimson, rincon, ringeisen, ringen, ronson, rumson