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.
delta delt dealt delate delead delete dealate dolt deled daylit delude dueled duality duelled tilt
delta shelta gelt relit pelt belt felt flota valuta volta helot balata dealt lota melt melty muleta knelt pelota relet celt delt welt kelt galleta shelty
del deal deil delay dele deli dell delly diel duel duelli duello detail