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.
churred chirred charred chored chared chaired cheered shirred choired chard shred chord choreoid shrewd shored shared choroid charade sheared sheered chorioid shrewdie chert sherd shard chart cherty shaird shroud chariot charity cheroot shortie tiaraed
furred purred burred churred curred loured jarred juried curried quarried mured parried knarred marred herried rared pureed poured soured tarred toured warred whirred worried chirred shirred jerreed harried buried lured barred birred berried ferried garred cured serried erred parred tarried turret quired dured married gnarred uredo wherried whirried charred carried hurried yirred red urd
churr churro charr charro charry cherry chirr chirre