Zelnick rhymes with:
belnick, celnik, kostelnik, melnick, melnik, melnyk, belnick, celnik, gollnick, kostelnik, melnick, melnik, melnyk, rolnick, skolnick, skolnik
Zelnick sounds like:
zalenski, zelenak, zelenka, zelinka, zelinski, zelinsky, zielinski, zillions, zwilling, zwolinski