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.
unsews uneases unsays unisize
unsews genuses ionises vainnesses tansies pensees guanases nouses anuses ensues rennases lionesses geniuses lenses lownesses noses vinasses finesses menses anises newnesses nooses tonuses chainsaws lionises tennises dunnesses onuses fewnesses pansies nonuses manses wannesses zoonoses bonuses wrynesses gaynesses sanseis kinases senses quinsies conioses coynesses gnoses leannesses minuses finises hanses noises mannoses linseys genoises gneisses kneesies joneses nesses niseis keennesses rawnesses teniases venuses geneses newsies rinses nonissues meannesses sinuses kineses senseis gooeynesses censes nauseas duenesses woenesses nownesses uneases penises feynesses hypnoses taeniases tenses waenesses shynesses