Deceit covers all instances where a character attempts to mask the truth and offer a deception of some kind; barefaced lying, misleading a guard, or even bluffing (or cheating) during a card game. The skill also covers instances where hiding true emotions or motives is necessary (feigning pleasure when one is bitterly disappointed perhaps, or attempting to seem welcoming and open when the opposite is true). Deceit forms a counterpart to the Insight skill and can be used to oppose Insight rolls when others are attempting to discern either truth or motive.