Synonyms for Unclimbable:

adj.

all (adjective)
unscalable, unsurmountable.

n.

unclimbable (noun)
unpassable, unsurmountable, impassable, unscalable.

Other synonyms:

n.
unsurmountable.

Usage examples for unclimbable

  1. Here the mountains receded, so that above us rose a mighty, dazzling slope of snow and below us lay that same pitiless, unclimbable gulf. – Ayesha The Further History of She-Who-Must-Be-Obeyed by H. Rider Haggard
  2. In fact, the eastern side of the Grand Teton appears to be absolutely unclimbable – The Moon Metal by Garrett P. Serviss