Unclimbable
"Unclimbable" in a Sentence (3 examples)
Those cliffs are unclimbable.
The base of each [floodlight] tower forms an outdoor-type sub-station compound with a 7ft unclimbable fence which houses the extra high-voltage ring main switchgear, the transformer and the medium voltage switchgear.
Yet every world should have at least one unclimbable mountain.