Expo rhymes with:
crespo, crispo, obispo, acampo, alpo, bacigalupo, bontempo, burpo, cacioppo, campo, cantalupo, capo, cappo, conasupo, contempo, crespo, crispo, cupo, defilippo, delcampo, depo, depot, difilippo, episcopo, filippo, firpo, flippo, gestapo, grippo, grupo, gruppo, harpo, hippo, hypo, kimpo, lampo, leppo, lippo, lupo, nappo, o'campo, obispo, ocampo, okpo, piscopo, pupo, repo, restrepo, sanfilippo, stumpo, swapo, tampopo, tipo, typo, zippo
Expo sounds like:
easib, eckhoff, eggcup, eggshape, eickhoff, ejup, equip, escape, escapee, espe, espey, espy, eusebio, excessive