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