Excel rhymes with:
accel, maxell, noxell, accel, ancel, ansel, cel, cell, cosell, decelle, desselle, fascell, giselle, gsell, marcel, marcelle, maxell, mousel, noxell, outsell, percell, procell, purcell, resell, roussel, roussell, rousselle, sel, sell, selle, unsell
Excel sounds like:
eagle, eagleye, eakle, easel, easily, easley, eckel, eckl, eckley, ecole, eggshell, egle, egley, egli, egly, eichel, eisel, eisele, equal, equally, euclea, exel, exhale, exile, exley, ezekiel, ezell, ezelle, ezola, ezzell