Preexist rhymes with:
exist, coexist, exist, coexist, exist, resist, assist, baptiste, chryst, cist, coexist, consist, crist, cyst, delist, desist, dismissed, enlist, exist, fist, frist, ghrist, gist, grist, hissed, insist, kissed, kist, krist, list, liszt, missed, mist, nist, persist, pissed, quist, reminisced, resist, rist, schist, subsist, tryst, twist, vist, wist, wrist
Preexist sounds like:
paperweight, parachute, parachuted, parakeet, parasite, parched, parked, parkside, parquet, parsed, perched, perished, perked, peroxide, perquisite, persaud, persecute, persecuted, perset, persist, persisted, persuade, persuaded, perused, phrased, pierced, poorest, pracht, praised, prasad, preached, precast, precede, preceded, preceed, precht, preciado, precooked, preexisted, prerequisite, presaged, prescot, prescott, preset, preside, presided, presidio, pressed, presswood, prest, presta, presti, prestia, presto, prestwood, presutti, preyista, priced, prichett, priciest, pricked, prickett, priest, priesthood, prized, proceed, proceeded, processed, procida, procyte, project, projected, prosecute, prosecuted, prosody, prost, prostate, prostitute, proust, prust, purchased, purest, purged, purist, pursed, pursued, pursueth, pursuit