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