Amerigas rhymes with:
airgas, energas, airgas, bluegrass, boardingpass, bumpass, bypass, eelgrass, energas, eyeglass, fiberglas, fiberglass, hourglass, jackass, landmass, outclass, overpass, piepgras, plexiglas, plexiglass, sassafras, serfass, shortgrass, snodgrass, spyglass, sunglass, tallgrass, trespass, underclass, underpass, upperclass, worldpass, yankass
Amerigas sounds like:
amar's, amargosa, amaris, amerco, america, america's, americas, americas', americo, americus, amerigo, amerika, amir's, amorosi, amoroso, amorous, amoruso, anarchic, anarchy, anorak, anorexia, anorexic, anorexics, anrig