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.
bubblier bubbler babbler
bubblier rubblier knobblier wobblier nubblier wabblier pebblier bluer wobbler dibbler wabbler nobbler cabler cobbler baler bubbler babbler rabbler belier dabbler gabbler quibbler hobbler fabler diablery doubler bullier blear feebler nibbler labeler abler libeler nobler gobbler
bubbly bubble babble bauble bobble bubal bubale abubble