Unobtainable means that something is not possible to get or to happen. The phrase "unobtainable object" is often used to describe something that is too difficult or impossible to find.
The object is unavailable for purchase.
The object is not available for rent.
adjective
not capable of being obtained
Synonyms:
1
The results of the coincidence function permit results heretofore unobtainable.
2
Food was mostly unobtainable and he existed on hard, parched barley.
3
Not just difficult, but unobtainable.
4
Expect parking to be practically unobtainable.
5
Opinions abound, but fact in this is unobtainable.
6
A direct link to the page is unobtainable.
7
Free space is an idealization that is physically unobtainable.
8
Some skeptics regard this as an unobtainable vision.
9
There are going to be times when a consensus is unobtainable.
10
A copyright free similar image is unobtainable for this purpose.