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.
cheered sheered chored chared churred charred choired chirred sheared chaired chord sherd chert shred choreoid chard cherty shored shared shrewd cheroot choroid shirred chorioid shrewdie chart shard shaird shroud charade chariot charity sheroot tiaraed
jeered veered queered sheered leered peered cheered sheared heired tiered eared teared erred sered feared aeried jereed cered queried seared neared zeroed nereid teredo reared geared reread red
cheer cheerio cheero cheery cherry sheer ocher ochery