Roil rhymes with:
broil, croyle, embroil, royle, boil, boyle, britoil, broil, coil, coile, coyle, croyle, doyle, embroil, foil, foyle, gatoil, guilfoil, hoyle, lukoil, moyl, moyle, o'boyle, oboyle, oil, oleoyl, recoil, royle, soil, spoil, statoil, toil, uncoil
Roil sounds like:
rael, rahal, rahill, rahilly, rahl, rahul, rail, raile, railey, railway, raley, rall, rallo, rally, raoul, rarely, raul, rawl, rawley, rayl, rayle, real, reale, reali, really, reel, reihl, reil, reiley, reilley, reilly, reily, relay, reli, rella, rely, relyea, reul, reule, rhule, rial, riehl, riehle, riel, rielly, riely, rile, riley, rill, rilla, riolo, roehl, roell, roelle, rohl, rol, role, roley, roll, rolla, rolle, rollei, rolley, rolli, rollie, rollo, rolly, rouleau, rowell, rowley, rowlie, rowly, royal, royale, royall, royally, royle, ruehl, ruehle, ruel, ruella, ruelle, ruhl, ruhle, ruhollah, ruhul, rula, rule, ruley, rulli, rullo, rural, ruyle, ryal, ryall, ryle, rylee, ryley