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.
shred shored shrewd shared sheared sheered shirred sherd shard shrewdie chared shroud chored shaird chaired choired charred chirred churred cheered shortie choreoid chord short chard shirt shirty shorty charade choroid sheroot tiaraed chorioid
shred red wearied uredo tarred barred feared tiered freed trued burred ired gored gyred whored eared berried rared sired wared teared pureed whirred quarried aired laired hired parried cared birred creed knarred bread faired fired dured chard jerreed curried queried veered reread pored sored churred cred sered deaired toured pared sheered worried shirred charred chord cured married tiaraed furred hard treed mired herd jeered bared oread carried cered chirred breed shared zeroed bored loured marred bred preed nereid harried dreed reed peered fried juried reared whirried queered read hurried jarred waired haired heired caried neared redd fared erred wired tared wried rued garred gnarred dried aeried soared wherried tarried greed mured ferried purred tired teredo tyred geared foredo chared redo leered hared seared brede moored tried herried jereed paired chored pried cored oared quired buried dared rede varied curred lured cheered serried warred choired tread roared poured soured credo shard cried sheared dread sherd parred chaired shored shrewd yirred
shrew share sharia shariah shear sheer sherry shier shire shirr shoer shore shri usher