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.
tetri tetra tetter teeter tatar titre dater tutor doter titer deter tater toter detour touter totter dotter tauter titter tatter tedder dotier tidier tooter dieter dietary dottier tattier tottery tuatara tuatera daughter tattooer doughtier
tetri terai uteri tetra dieter stria hysteria retro peter niterie trio yttria atria batterie fetor foetor hatteria coterie quieter latria meeter meter metre metro nutria poetry retry satori deter teeter tori sheeter