x \[kh\] is the voiced version of h; it is the “rough breath” of Greek and Russian, and the sound spelled with the letter chi (‘chi’) in Greek. In fact our European letter ‘X’ is derived from ‘chi’. X \[kh\] is also the sound represented by ‘ch’ in both German and Scottish. Thus Xai-kre is pronounced \[KHIGH-uh-kreh\], in which the \[KH\] is a very distinct but dry sort of gargle which will sound very Russian to you when you get it right. Notice that unlike h, x may precede as well as follow vowels. When \[kh\] does precede a vowel, as it does in Xai \[khigh\], it takes the acoustic shape of that vowel. Happily enough, the IPA for Loglan x is \[x\].