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.
scrum sacrum scram scrim scream sickroom squirm squirmy
scrum sacrum corium corm cram crumb curium grum grume quorum aquarium scram scrim decorum
sacra scoria sucre scurry scry screwy screw scree scour scoriae score scar scaur scary scarry scarey scare secure escrow