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.
mirror marrer mirier marrier merrier merer moorier
error mirror terror horror crore torero prior marrer cruor furor juror furore frore burrer aurora roar warrior
mir miri amir murry murre murr morrow morro moire moirai moira miry mire mair merry mbira marry marrowy marrow murra murrey myrrh emir