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