I went to babynames.com and here's what I got! X-IOMANIA XADRIAN XAKERY XALVADORA XANADU XANDER XANDRA XANDY XANNON XANTARA XANTHE XANTHUS XANTI XANTO XARIA XARLES XAVA XAVIER ...
Girls Names XalvadoraXantaraXantheXariaXavieraXaviereXenaXeniaXexiliaXhosaXiaXia heXiangXin QianXinavaneXiomaraXiuXiu JuanXolaniXueXue FangXuxaXylia Boys Names...
Xavier (Zay-vee-er or Ex-ayve-ee-er).
To list a few: Xerox. X-ray.
xylophone x-ray