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.
poesy posy pes pees poos peso pies pows peas pews pehs pose pois pious hypos hypes posse poohs pacey psoae peise pussy pease poise pas pus powwows pis psi poussie pase puss pace pays pice piso pass pias pacy hyps puce piss paws
poesy oes looies loess goes goosy cosey cosy cooees cooeys hosey joeys noisy joes nosy moues sooey zooey resay rosy zoeas does toes cheesy choosy newsy lousy cozey easy mosey bossy messy lossy looeys goosey queasy mossy bousy hoes mousy foes voes nosey noes hooeys posy roes roues dioecy toeas woes choosey shoes