1Steep or precipitous — describing a slope, mountain path, or terrain that is difficult to climb or walk because of its sharp incline.
この山道は険しくて、登るのに三時間もかかった。
This mountain trail is steep, and it took three hours to climb.
険しい崖の上に小さな神社が建っていた。
A small shrine stood atop the steep cliff.
険しい道を車で走るのは危険だ。
Driving on steep, rugged roads is dangerous.
昔の人は険しい山を越えてこの村にたどり着いた。
People in the old days crossed rugged mountains to reach this village.
2Grim or stern in expression or attitude; also used to describe a situation that is harsh and difficult.
母は険しい顔をして部屋に入ってきた。
My mother came into the room with a stern expression.
会社の経営は険しい状況が続いている。
The company's management continues to face a harsh situation.
彼の険しい口調に、みんな口をつぐんだ。
Everyone fell silent at his harsh tone.