Mirtle rhymes with:
mertle, myrtle, birtle, ertel, ertl, ertle, fertile, hertel, hirtle, hurtle, infertile, mertle, myrtle, pirtle, purtell, purtle, turtle
Mirtle sounds like:
marital, martel, martell, martella, martelle, martelli, martello, martial, mertle, moertel, mortal, mortally, mortell, myrtle