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.
sheared shared sheered shred shard sherd shored shrewd chared shaird shirred cheered chaired charred shrewdie chard shroud chored charade chirred churred sheroot choired tiaraed choreoid chart chert short chord shirt cherty shirty shorty chariot charity cheroot choroid shortie
feared reared sheared teared eared neared seared geared nereid aeried tiered wearied bared marred beard barred erred garred jarred wared zeroed varied cered sered heired deaired tarred teredo waired warred chaired charred chared sheered leered cheered jeered peered caried pared rared veered heard paired queried haired oared knarred aired fared shared jereed roared faired soared dared tared parred gnarred queered laired hared cared tiaraed red
shear share sharia shariah sheer sherry shier shoer usher