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