Hallmark rhymes with:
calmark, calmark, cellmark, chilmark, avmark, benchmark, bevmark, birthmark, bismarck, bismark, calmark, caremark, cellmark, chilmark, denmark, deutschemark, earmark, equimark, esmark, furmark, goldmark, hashmark, hundertmark, landmark, lexmark, lindmark, lundmark, newmark, oakmark, pathmark, pockmark, postmark, raymark, sanmark, southmark, torchmark, trademark, transmark, vandemark, vandermark, watermark, westmarc, westmark
Hallmark sounds like:
hallmark's, hallmarks, helmerich, helmers