Multiyear rhymes with:
baehr, bier, buccaneer, comandeer, ear, endear, hear, here, keir, keneer, manteer, mishear, musketeer, overhear, puppeteer, rehear, saffir, sampere, seer, sight-seer, speare, teare, tier, we're, weir
Multiyear sounds like:
malhotra, malter, melador, melder, meltwater, milder, mililiter, military, milliliter, millilitre, molder, molitor, molter, moulder, moultrie, mulder, muldrew, muldrow, multer