Unubtainium 

super precious element that is used in many parts that come on brand new model chrysler cars

I took my new car in for service and they cant get the part. apparently its made of unubtainium and its going to be 6 months to get it

Unubtainium by flstfirider January 11, 2013

unobtainium 

An imaginary unavailable material used humourously to solve otherwise impossible problems; an item of unaffordable price.

Of course, it would have to be made of pure unobtainium to work.

unobtainium by Peter Baird August 16, 2003

unobrainium 

When you and your friend say the same thing at the same time as if you both are one big brain.

S - We should totally give away the address of this Dr. Beller to everyone in the class using phrases and terminology only he would understand.

R - Unobrainium, I was thinking the same.

unobrainium by Vollidiot March 12, 2021

unobtanium

used to describe the material that something you cant find is made out of, like hard to find car parts.

those taillights must be made of unobtanium, i cant find them anywhere

unobtanium by sayonaura April 20, 2004

unobtanium

That which cannot be obtained; theoretical but not yet real.

It may have come from the movie "The Core," when Delroy Lindo is describing the ship needed to go to the Earth's core, which can only theoretically be built. When someone asks him what it would be made of, he said, "The real name has 37 syllables, but I just call it... unobtanium."

unobtanium by Misterdoe February 8, 2005

unobtainium 

any nonexistent material

A ship like that would have been made of unobtainium

unobtainium by The Return of Light Joker April 1, 2010

unobtainium 

the rarest of ALL elements unexistent everywhere in today's world you'll NEVER be able to aquire some nobody has any at all it's undoable

as the chief procurator here, I've searched the net, scoured the collectors inventories boggled my mind far and wide, but struck out bro your frosted, translucent, illumuinated silk-ma~che 12vdc /12ft long stringer of dingo balls must have been made of unobtainium they're nowhere to be found damn!

unobtainium by grzly February 28, 2009