Petraitis rhymes with:
moraitis, arvanitis, mazaitis, moraitis, phlebitis, whitis, altice, anstice, anstiss, artis, arvanitis, aseritis, atlantis, atlantis', battis, bettis, botrytis, burtis, clematis, courtis, curtice, curtis', curtiss, custis, debenedictis, delaurentis, derobertis, desanctis, desantis, devincentis, disantis, duplantis, estis, eustice, fortis, fotis, fratus, gattis, gettis, gottis, hartis, huestis, injustice, intis, justis, kariotis, kasputys, kurtis, lamastus, lantis, lettice, loftis, logothetis, maldutis, maniatis, mantis, martis, matis, mattice, mattis, matus, mazaitis, mertice, metis, moraitis, mortis, myrtice, myrtis, notis, oatis, ortis, otis, pattis, peratis, peratis', pettis, phlebitis, pneumocystis, politis, portis, prentice, prentiss, sholtis, shultis, solstice, soltis, veliotis, whitis, yantis
Petraitis sounds like:
patridge, patriot's, patriotic, patriots, petrides, podhoretz, potratz