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.
bolshy bolshie blush bluish blotchy blueish bullish belch bleach blotch
bolshy flesh slash polish plush plash goulash owlish lush galosh blush bullish flash flashy dollish slushy tallish sloshy lash flush coolish relish plushy plashy palish golosh mulish clash calash fleshy hellish ghoulish foolish delish slush dullish slosh welsh
boil bola bole boll bolo boule boulle bowl boyla abolla abollae obol obole oboli