1. Adj. Fake,unauthentic,sub standard person or thing.
E.g. 1. yo those gold chains ain't real son, they're fugazi
2. N. Something or/and somebody that is fake,inferior or sub standard.
E.g. 2. i only believe in what is real no time for the fugazis.
Adj. 1. those shoes i bought yesterday are bunch of fugazis.
Adj. 2. that dude is not real,he's fugazi.
N. 1. i only roll with real people, i don't roll with fugazis.
Slang
3. Fugazi was an American GI slang during the Vietnam war. "Fugazi" is an acronym which stands for "Fucked Up, Got Ambushed, Zipped In." It refers to out-of-control situation such as in a chaotic jungle warfare combat environment. See also: List of US Army acronyms
Not sure where all of these other, 'Hipster', fugaze/fugazi definitions originate on Urban Dictionary, but they don't illustrate the appropriate tone and meaning of the word. See what I did there? #trash #fake #fronters #lames
(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."