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.
marrowy marrow marry morrow murry morro merry murrey mar mair mare mara miry murr maar maria moory moray murra murre myrrh
furrowy arrowy marrowy arrow barrow borrow burrow farrow furrow harrow marrow morrow narrow sorrow yarrow row