Here's what rhymes with relk.
elk lc whelk yarmelke Words that almost rhyme with relk
wreck ec ek rec lech check neck deck desk sec cheque tech nec peck shek trek beck dec haec heck fleck burlesque msec spec speck recheck grotesque arabesque exec bedeck kopeck hatcheck spellcheck bottleneck statuesque turtleneck quarterdeck discotheque