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.
turps traps tarps trips tripos trapes tripes troops tropes troupes traipse trappose towropes drips dorps drops dropsy drupes droops drapes hydrops trapeze hydropsy trapezia trapezii trappous
burps urps turps chirps syrups carpus sirups groups croupes gorps corpus corpse craps sharps carps perps hydrops drops traps dorps troupes props corps preps rewraps herpes wraps harps fraps larrups croups grips reps rips roups crops bewraps tarps drupes trips drips raps warps chirrups sherpas
tarp trap trip tripe trippy trop trope