Felix •admix, affix, commix, fix, Hicks, intermix, MI6, mix, nix, Nyx, pix, Pnyx, prix fixe, pyx, Ricks, six, Styx, transfix, Wicks •Aquarobics • radix • appendix •crucifix • suffix • Alex • calyx •Felix, helix •kylix • Horlicks • prolix • spondulicks •hydromechanics • phoenix •Ebonics, onyx •mechatronics • sardonyx •Paralympics • semi-tropics •subtropics • Hendrix •dominatrix, matrix •administratrix • oryx • tortrix •executrix • Beatrix • cicatrix •Essex, Wessex •kinesics • coccyx • Sussex •informatics, mathematics •Dianetics • geopolitics • bioethics •cervix • astrophysics • yikes

Felix, Roman deacon, antipope (355–56). Emperor Constantius II, an Arian, set him up to replace Liberius. He is wrongly known as Felix II.