Speech "The ability to communicate in a practical and efficient manner. The skill of convincing others that your position is correct. The ability to lie and not get caught." 0 0%+(5*CH) is the % your character will start with.
Soft-capping at 109, caps at 125. No doubt an extremely usefull skill. You won't get past the VC guards with fake documents (if low on luck) and such, so be smart about it.