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