Freeport rhymes with:
seaport, airport, allport, bridgeport, cambridgeport, carport, coudersport, davenport, gumport, kennebunkport, kingsport, lamport, lockport, lufttransport, massport, mckeesport, passport, purport, rapaport, reexport, rockport, seaport, shippingport, shreveport, southport, spaceport, westport, williamsport
Freeport sounds like:
fiberboard, fibreboard, firebird, frevert