Sarcasm meaning, sure, whatever.. uh huh, yeah... right.

Intelligence agency term for "psychological operation". A government or corporate-sponsored operation, usually taking the form of a "terrorist attack" or "crazed gunman on a spree", with the intent of panicking the public into demanding more police and laws inhibiting freedom. Psyops are usually carried out by drugging a civilian or group of civilians with aggression-promoting drugs, psyching them up, arming them, and sending them out to commit mayhem. Government-sponsored terrorism. See also blackshirts, conspiracy

Used when a person does not understand another, or just thinks he's being stupid.

A sarcastic way of saying "right"

This word is to be applied when an awkward situation arises. It is to be used when there is no comeback to a primary "rip". It is an acknowledgement of your defeat in the certain context.
There is no other word that can be used in the same context in the history of the English language.