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.
sumos sums sambos summas samosa sims soms seams seems semes smews somas semis simas cymose cymous sambas simious
sumos mos lums neums cymose geums bums numbs heaumes gombos gums gummose mimosa combos moas haymows cameos hums mumus mumms memos limbos sambos dumbs shamoys shamois doumas chymous chemos ramose umbos dumas pomos famous vamose hommos daimios rimose fumes bimbos romeos comous loumas jumbos nomos camos moms mimeos awmous samosa mambos gaums rums gumbos koumys kumys mums moos neumes ammos humus gummous comose cymous lumas limos ambos koumis pumas homos sums pneumas rimous ramous doums mows duomos moss chamois chums demos shammos shamos dumbos shmoes