precipitous; rugged; inaccessible; impregnable; steep

grim; severe; stern

steepness; steep place

Esp. 険, but also written as 権 or 慳

harsh (look); sharp (tongue)

steep; precipitous

Adjectival nouns or quasi-adjectives (keiyodoshi)

steep (terrain); precipitous

Common noun

precipice; steep place

natural defences; natural defenses; steep place

steep path

steep; precipitous

steep; dangerous