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.
wamus wammus wames whams whammies whims wombs whimsy whomso whimsey
ramus amus shamus wamus mus gambs hummus emus pams fames foams lamas jambs momus tamis dams names iambs roams beams llamas mumus lams bemuse lambs shawms shams camas shames chymous gummous whams wammus maims reams amas gams teams hames kombus rams seams comous rimous muss bams muse miaous famous cams haems nimbus gamas dames jams kames hams lames cames games camos ramous tames aims emeus gaums awmous tams wames humus mums muumuus iambus loams limbus amuse amis chams shamas mamas shamos cymous yams
wame wham whammo whammy whamo swam swami swamy