taru-adjective
Literary description of rugged, steep mountain terrain. Rare in modern Japanese.
その山道は崎嶇として、登るのが困難だった。
The mountain path was steep and rugged, making it difficult to climb.
taru-adjective
Figurative use for a harsh, difficult life or circumstances. Rare and literary.
彼は崎嶇たる人生を歩んできた。
He has led a hard and troubled life.