Here's what rhymes with heightlength.
Words that almost rhyme with heightlength
lens tenth sense hence dense offence thence whence fence offense tense tens cleanse gems hens pence pens dens gens glens fens hems immense stems commence theorems harems defence defense intense incense suspense condemns pretense condense morphemes halfpence expense dispense sixpence recommence twopence recompense commonsense frankincense length death health wealth breath depth breadth neath strength stealth shibboleth twelfth commonwealth