A fork of Rural Dictionary
(Noun) A typical word your engineering professor will yell at you in the middle of lecture to flex how he is smarter than you but never explains what it is.
Student: "Dr. Peng, I was wondering how you solve this carnot cycle?" Smartass Asian Professor: "Fugacity" Student: "I don't understand what you mean" Smartass Asian Professor: "I can't help you. Go work at McDonald's or quit school. This is highschool level problem."
To act out of bad leadership;dickhead attitude.
Stop being such a fucking fugacity!