Kostecki rhymes with:
kotecki, bielecki, czarnecki, dolecki, gorecki, jarecki, kawecki, kopecky, kopetski, kosmetsky, kostelecky, kotecki, lasecki, piasecki, siedlecki, sobecki, solecki, sovyetsky, strzelecki, terlecki, touretzky, zaretsky
Kostecki sounds like:
kaatz, kadish, kataoka, kate's, kates, kathy's, katja, kato's, kats, katsuhiko, katsushi, katyusha, katyushas, katz, kautz, keats, keatts, keds, keetch, keith's, keitz, ketch, ketchie, ketz, kid's, kiddies, kids, kids', kitagawa, kitch, kites, kitowski, kits, kitsch, kittiwake, kitts, kitz, kiyotaka, kodak, kodak's, kodiak, koetje, kokate's, koskotas, kostas, kostek, kostic, kostick, kostka, kotas, kotch, kotecki, kotek, kotowski, kottke, kottwitz, kotz, kowitz, kudos, kudzu, kutch, kutsch, kutz, kuwait's, kuwaitis, kwiatek, kwiatkowski, kyd's