Tropp rhymes with:
crop, cropp, drop, gropp, kropp, prop, propp, raap, ropp, schropp
Tropp sounds like:
tariff, tarp, tarpey, tarpy, terrify, tervo, tharp, tharpe, therapy, there've, thereby, thereof, thorp, thorpe, thorup, thrive, throb, throop, throve, todoroff, toribio, torp, torpey, trabue, trap, trapp, trappe, traub, trib, tribbey, tribby, tribe, trip, tripe, tripi, tripp, trippe, trippie, trivia, troop, tropea, trophy, troubh, troup, troupe, trove, trubey, truby, true-view, trupp, tryba, turbo, turf, turvey, turvy