X	ɛks
xeno­glossia	ˌzɛnəʊˈɡlɒsiːə
xenon	ˈziːnɒn
Xerxes	ˈzɜːksiːz	not as Ancient Persian
xi	ksɑɪ	not as Ancient Greek
xylophone	ˈzɑɪləˌfəʊn