Isle rhymes with:
aisle, argyll, awhile, beguile, bile, bille, cheil, compile, deihl, delisle, file, geil, gile, gille, guile, heil, hile, hyle, i'll, kile, kurzweil, kyl, kyle, lile, lyle, marseille, mile, monteil, nevile, niall, nile, panfile, pfeil, phyle, pile, pyle, refile, reihl, restyle, revile, rile, ruyle, ryle, seil, sheil, smile, soleil, stile, style, theil, theile, tile, vantuyl, vile, weil, weill, while, wile, worthwhile, wyle, zile
Isle sounds like:
icicle, icily, igel, igloo, ikle, isaly, isla, isley, isola