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.
tread trad treat dread triad trued tyred tired trade treed tried tared toured tiered tarred treaty teredo tirade teared turd tret trod tarried trode torte dried torta dured trait tardo tardy trite dared dreed terete terret toroid dorado triode turret torrid deaired tart tort trot
read oread tread reread bread dread red rad cried jerreed jarred bored rued haired aeried caried jeered veered berried aired leered trade pared greed feared mired fired brede byroad curried garred credo varied paired gnarred preed toured gyred cered braid raid grade furred cured ferried irade rede hereat pored ired wared sired cheered wherried whirried wired readd sored chaired tirade trued choired parried triad churred rared sheared shirred shred dried tiaraed wearied chared tared treat neared breed uredo grad zeroed great buried marred married sered bared broad curred heired bred herried farad eared queried foredo creed reed roared soared dared maraud moored parade cred oared parred hurried wried harried myriad hired knarred quarried gored hared quired mured orad waired purred reared jereed carried brad redo beard dorado cored barred laired freed geared faired ready teredo cared corrade deaired pureed nereid soured erred tiered fraud tyred teared poured fried loured dreed juried pried peered road redd fared queered birred bready lured burred tarried tired charred chirred whereat whirred whored dured serried worried trad tried seared charade treed chored heard shared sheered shored tarred shrewd warred yirred
tare tray stray straw readier reader tyre true trey tree tore tear torah tora tire terai teary strawy strew