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.
whirred whirried wired wherried waired warred whored worried weird wared weirdy weirdo wearied weirdie whereat whereto ward word whort wordy worrit
birred chirred yirred whirred shirred ired haired harried paired knarred gnarred married laired quarried carried fired curried jarred erred charred rared sired tarred tiered waired wherried whirried worried choired parried heired hired furred churred herried quired garred jerreed faired curred ferried berried parred serried marred mired hurried deaired tarried tired warred barred aired wired chaired burred purred red
whirr whirry whir wherry wirra