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.
chirps chirrups charpais charpoys sharps sherpas sharpies
chirps euripus crops gripes ripes rips craps bewraps burps wraps hydrops traipse tripes drips trips syrups urps rewraps harps preps sharps larrups reps raps tarps cripes gorps corpse corps corpus carps herpes carpus drops traps fraps dorps tripos sirups turps props warps perps chirrups grips sherpas
chirp chirpy chirrup chirrupy charpai charpoy