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