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.
whished wished whooshed washed whisht witched wooshed washday watched witchhood washout
pished fished dished whished wished shed fashed mushed whooshed washed bashed noshed bushed mashed pushed dashed pashed reshoed leashed shied shoed lushed wooshed ashed rushed quashed coshed niched gnashed hushed moshed meshed gushed cowshed gashed miched deashed lashed cashed joshed tushed sashed hashed shushed
whish wish which wisha swish swishy