unreachable, unattainable
Ella es verdaderamente un tesoro inalcanzable.
She is truly an unattainable treasure.
— El cuento de la princesa Kaguya (2013)
It was an unattainable goal.
Para mí, usted sería un tesoro tan inalcanzable como eso.
To me, you would be a treasure just as unattainable as that.
— El cuento de la princesa Kaguya (2013)
Unattainable number.