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.
hydrid hydroid hydride droid dried druid deride hydrate tried dreed dured droit dread dared triad dorado toroid torrid triode deaired diorite tarried
hydrid rid druid lurid braid murid jerid caried querida joyride curried gride corrida hybrid nereid aroid buried herried virid pride harried sciurid ferried serried aeried dried fried hydride tarried torrid tried wherried worried parried bride hurried period horrid berried married irid myriad jerrid juried carried queried grid quarried cried arid neuroid raid viroid boride whirried wearied triad toroid hydroid bourride varied pried droid wried deride ride sciuroid hayride choroid
hydra hydrae hydria hydriae hydro