Legilimency 

The skill of extracting feelings and memories from another person's mind. It also allows one to convey visions or memories to another person, whether real or imaginary.

One can use Legilimency to know if one is lying or deceiving.

Legilimency by SiriusWhite August 26, 2012

legitimancy 

the act of being legit

whoa, she's legitimancy!

legitimancy by emolythewhore May 28, 2009