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.
sylis sols sullies sels sillies sals sallies slues salsa solus sills sauls slays sloes slews solos sails soles souls soils sells slaws seels sales slice seals sulus slows sulci silos soleus selles ceilis sluice selahs xylose sallows scillas sailless soilless soulless
sylis lis ghillies aiolis gallies bialies allies ballies bailies jollies flies helios goalies boylas billies cullies gillies fellies bellies ghylls hollies palais colies nellies belies sullies kayles mollies chillis tallis chilis challis doolies woollies willies mealies wellies walies bialis relies rallies dulias plies doilies sallies dallies dellies follies dahlias polies polis killies lilies jellies lollies sillies wyles pulis alias pilis collies ghoulies holies realise hylas bliss olios follis glias quillais cullis gullies polios kellies valise bullies lies folios coulis muhlies leis coolies ceilis delis dailies hoyles dillies caulis doylies molies poleis fillies tellies wallies aaliis wheelies woolies dollies challies chilies tallies chillies chyles