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.
mucous mucus mucosa mucose mucosae mucks macs mocs mycs mogs mugs mics magus mokes macks makos micas muggs micks mocks macaws maquis magueys mickeys moggies muggees
fucous raucous mucous dioicous cos ecus ficoes ficus focus coys boocoos fucus cacaos jouks cogs hocus buckos cues jocose aqueous jockos ruckus scouse sickos souks decos locoes wackos chicos cocoas cows mucose bogus locus cuss cosy coss fucose coos vacuous nocuous caucus cocos jucos guacos mucus locos mucosa geckos recuse rugous scows soukous zouks decoys tacos whackos shackos