険けん阻そ

na-adjective

steep; precipitous

Describes terrain that is dangerously steep and rugged. Often used in literary or descriptive contexts.

• その山やま道みちは険けん阻そで、登のぼるのが難むずかしかった。

  The mountain path was steep and rugged, making it difficult to climb.

noun

precipice; steep place

Refers to a steep, dangerous cliff or slope. More concrete than the adjectival sense.

• 登と山ざん者しゃは険けん阻そに立たち向むかった。

  The climbers faced the precipice.