Formal Logic Formal logic deals with deductive reasoning and the validity of the inferences produced. For an argument to work, the conclusion must logically follow the premises and the premises must be true.
Vibe is the aura a person possess. The kind of vibes that a person emanates depends on his feelings. Every feeling has a frequency or energy. If you feel good, happy or comfortable while meeting someone you say that the person emanates positive vibes.
Haunted by a bad vibe or aura. Can be used as a noun or an adjective. Now that place had some bad juju. In answer to a question about what someone thought of a person place or thing one could answer, bad juju.