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.
hymnal hymenal hymeneal hymenial hymeneally manual menial manually menially manila manilla manille
hymnal biennial finial finale phonal faunal binal final menial pineal penal renail nala hymeneal snail lineal zonal cuneal denial genial tineal venal tonal vinal biennale nail manual vineal anal annal veinal annual banal anneal nounal pinnal penial biannual renal hymenial xenial hymenal zoonal lienal tenail canal toenail venial unnail