Dekuyper rhymes with:
kiper, kuyper, diaper, hyper, kiper, kuyper, piper, pyper, sniper, striper, vanriper, viper, wiper
Dekuyper sounds like:
decaprio, decipher, deschepper, deskpro, despair, desper, diaspora, dicaprio, disappear, disbar, disbro, disbrow, discover, discovery, disfavor, dispair, dogberry