Which word describes a person who says they have knowledge about a subject, but it is only superficial, not deep?

Which word describes someone who is able to know everything?

Which word describes a person hiding his or her identity?

Which word describes the part of a person's mind that helps him determine right from wrong?

Which word describes an unbelievably cruel action that didn't involve good choices?

Which word describes what you are if you are fully aware of something going on around you?

Which word means to know someone from a past experience, often because he or she looks familiar?

Which word means the mental process of knowing?

Which word describes people who are careful and thoughtful before taking action?