Preparer rhymes with:
bearer, carer, error, fairer, ferrer, harer, kehrer, lehrer, mehrer, rarer, scharer, scherrer, sharer, sherrer, standard-bearer, starer, stretcher-bearer, terror, there're, wearer
Preparer sounds like:
periphery, porphyry, prefer, prepare, proffer, proper, propper, provera, purifier, purveyor