Preppie rhymes with:
preppy, preppy, digiuseppe, giuseppe, pepe, pepi, peppi, peppy, preppy, seppi, sheppy
Preppie sounds like:
paperboy, prab, prebe, prefab, prep, prepay, preppy, preview, prevo, priebe, privy, prob, proba, probe, prof., proof, prop, propp, prove, provo, purifoy, purify, purpa, purvey, purview