Nestor rhymes with:
nester, amvestor, bester, brester, chester, ester, esther, fester, hester, investor, ivester, jester, kester, leicester, lester, mclester, mester, mestre, molester, nester, pester, polyester, questar, requester, rester, semester, sequester, silvester, sylvester, sylvestre, tester, testor, trester, trimester, vestar, vester, westar, wester
Nestor sounds like:
nastier, nectar, negotiator, nester, neumeister, newscaster, nicastro, nichter, nicotera, nicotra, nighter, non-sequitor, nostra