I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
tutties tuttis tatties titties duties tutees tuts ditties dauties tates touts tutus tides tauts totes tidies todies deities toadies duteous toddies teddies dawties tootsie tattoos tits tats tots tets teds dates dites titis toots toits dotes teats dauts dudes diets diodes teiids tatsoi dattos dittos tootsy didies didoes daddies deutzia doodies dowdies tedious
fatties patties tutties kitties tatties cutties jetties jutties chitties titties catties ditties hotties butties putties potties ties rottes fyttes mattes laities battues puttees settees dauties pities reties tates bawties duties cities lattes ghettoes whities lattice tuttis moieties buttes cooties pieties cuties booties beauties footies suttees sties mottoes dawties fouettes gaieties mottes totes deities lottes tides tis
tutti tattie tittie tutty juttied puttied tutted tut