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.
vertu vert virtu virtue verite verity ferity ferret veered ferrate variety ferrety ferrite fart fort frat fret frit
vertu beret vert virtu virtue heart merit peart perdu pert derat wert chert cherty
veer veery vera very vier aver ever every over