Flop rhymes with:
glop, klopp, lop, lopp, plop, slop, atop, bop, bopp, chop, chopp, cop, copp, crop, cropp, dopp, drop, glop, gropp, hop, hopp, hoppe, jopp, klopp, knop, knopp, kopp, koppe, kropp, lop, lopp, mop, nonstop, op, opp, paap, paape, plop, pop, popp, poppe, prop, propp, raap, ropp, schaap, schopp, schoppe, schropp, shop, shoppe, skop, slop, sop, sopp, stop, swap, swapp, top, topp, tropp, tschopp, wop, yopp
Flop sounds like:
falb, falbo, falloff, falvey, falvo, felipe, filby, filip, filipa, filippi, filippo, fillip, flab, flabby, flahive, flap, flavia, flavio, flip, flippo, floppy, fluff, fluffy, flyby, followup, fullilove, fulop, fulp, fulvia