Knopp rhymes with:
knop, atop, bop, bopp, chop, chopp, cop, copp, crop, cropp, dopp, drop, flop, glop, gropp, hop, hopp, hoppe, jopp, klopp, knop, 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
Knopp sounds like:
kamneva, kamp, kampa, kampe, kampf, kaneb, kanipe, kemp, kempa, kempe, kempf, kenaf, kimba, kimpo, kimwipe, knab, knabb, knabe, knape, knapp, knaub, knauf, knauff, knaup, knave, kneip, knepp, knief, kniep, knife, knipe, knipp, knippa, knob, knobbe, knobby, knoff, knoop, knop, knope, knopf, knouff, knupp, kociemba, komaba, komp, konop, kumbaya, kump, kumpf, kunaev, kunayev