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.
broodier brooder broader broider broidery border birder breeder bruiter braider boarder brattier brighter bordereau barter bordure barrater barrator barretor barretry
broodier grodier tardier prouder order lardier curdier cruddier crowder corder carrotier hardier broider brooder broader border ruddier rowdier rootier reedier greedier readier nerdier prodder reorder wordier