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.
senate sente sent sinuate sienite senti scent seined cenote zonate seniti sennit sennet sonata saunaed cent snit send snot centu saint cento santo snout suint snoot scend centai sanity snooty snotty snouty sonnet zenaida
enate senate innate lunate lanate zonate connate hyphenate pinnate quinate donate binate ruinate neonate pennate tannate phenate phonate cuneate gnat pointe rente mannite qanat gunite lineate dunite sonata sundae lenite manatee pinata monte pinite finite vawntie dunnite tentie quinnat untie antae shantey manat denote pantie keynote neat cenote connote nite auntie coontie minute sente reunite mentee hennaed conte note saunaed sinuate gahnite ante quinte kente sienite unite vauntie chantey kainite yente
sen scena scene seen seine sene senna sewn sienna snaw season