invalicabile
impassable
adjective een-vah-lee-KAH-bee-leh Rare
Origin: From in- (not) + valico (mountain pass) + -abile.
Also means
insurmountable
Usage Note
Invalicabile literally means 'impossible to cross' — used of borders, mountain passes, or barriers. Figuratively it describes an insurmountable obstacle: un confine invalicabile (an uncrossable border). The word is invariable in gender (same form for masculine and feminine); plural: invalicabili. It belongs to formal or written register.
Examples
"Il confine è considerato invalicabile in questa zona."
Natural Translation
The border is considered impassable in this area.

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