Speak

COMMAND HELP: SPEAK

usage: speak [language]

This will set the language you are speaking to language if you know that language. The chance of other creatures understanding what you say depends both on your skill with the language and theirs. To return to speaking normally, use 'speak common'. (note that tells and shouts will also use the language you have thus set).

Speak without an argument will tell you what language you are currently speaking.